by_block_pow.svg

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!-- Created with Inkscape (http://www.inkscape.org/) -->

<svg
   xmlns:dc="http://purl.org/dc/elements/1.1/"
   xmlns:cc="http://creativecommons.org/ns#"
   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
   xmlns:svg="http://www.w3.org/2000/svg"
   xmlns="http://www.w3.org/2000/svg"
   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
   width="621.31293"
   height="420.82019"
   id="svg3308"
   version="1.1"
   inkscape:version="0.48.4 r9939"
   sodipodi:docname="drawing-6.svg"
   inkscape:export-filename="/home/vub/drawing-6.png"
   inkscape:export-xdpi="90"
   inkscape:export-ydpi="90">
  <defs
     id="defs3310" />
  <sodipodi:namedview
     id="base"
     pagecolor="#ffffff"
     bordercolor="#666666"
     borderopacity="1.0"
     inkscape:pageopacity="0.0"
     inkscape:pageshadow="2"
     inkscape:zoom="0.7"
     inkscape:cx="428.536"
     inkscape:cy="230.81662"
     inkscape:document-units="px"
     inkscape:current-layer="layer1"
     showgrid="false"
     fit-margin-top="0"
     fit-margin-left="0"
     fit-margin-right="0"
     fit-margin-bottom="0"
     inkscape:window-width="1301"
     inkscape:window-height="744"
     inkscape:window-x="65"
     inkscape:window-y="24"
     inkscape:window-maximized="1" />
  <metadata
     id="metadata3313">
    <rdf:RDF>
      <cc:Work
         rdf:about="">
        <dc:format>image/svg+xml</dc:format>
        <dc:type
           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
        <dc:title></dc:title>
      </cc:Work>
    </rdf:RDF>
  </metadata>
  <g
     inkscape:label="Layer 1"
     inkscape:groupmode="layer"
     id="layer1"
     transform="translate(53.535996,-494.33002)">
    <rect
       style="fill:none;stroke:#000000;stroke-width:1.5"
       id="rect2987-4-2-0"
       width="60.710503"
       height="60.71051"
       x="659.85199"
       y="-7.9753761"
       transform="matrix(0,1,-1,0,0,0)" />
    <rect
       style="fill:none;stroke:#000000;stroke-width:1.0011909"
       id="rect2987-4-2-0-4"
       width="23.588949"
       height="587.87469"
       x="736.21661"
       y="-534.83929"
       transform="matrix(0,1,-1,0,0,0)" />
    <rect
       style="fill:none;stroke:#000000;stroke-width:1.5"
       id="rect2987-4-7-9"
       width="60.710503"
       height="60.71051"
       x="659.83167"
       y="-120.92405"
       transform="matrix(0,1,-1,0,0,0)" />
    <path
       style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
       d="m 9.477407,690.14626 50.50762,0"
       id="path3777-89-6"
       inkscape:connector-curvature="0" />
    <rect
       style="fill:none;stroke:#000000;stroke-width:1.5"
       id="rect2987-4-7-9-5"
       width="60.710503"
       height="60.71051"
       x="659.2428"
       y="-232.08142"
       transform="matrix(0,1,-1,0,0,0)" />
    <path
       style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
       d="m 120.6348,689.55743 50.50762,0"
       id="path3777-89-6-8"
       inkscape:connector-curvature="0" />
    <rect
       style="fill:none;stroke:#000000;stroke-width:1.5"
       id="rect2987-4-7-9-8"
       width="60.710503"
       height="60.71051"
       x="659.72992"
       y="-344.30533"
       transform="matrix(0,1,-1,0,0,0)" />
    <path
       style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
       d="m 232.8587,690.04453 50.50762,0"
       id="path3777-89-6-2"
       inkscape:connector-curvature="0" />
    <rect
       style="fill:none;stroke:#000000;stroke-width:1.5"
       id="rect2987-4-7-9-5-4"
       width="60.710503"
       height="60.71051"
       x="659.14105"
       y="-455.46271"
       transform="matrix(0,1,-1,0,0,0)" />
    <path
       style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
       d="m 344.01609,689.4557 50.50762,0"
       id="path3777-89-6-8-8"
       inkscape:connector-curvature="0" />
    <rect
       style="fill:none;stroke:#000000;stroke-width:1.5"
       id="rect2987-4-7-1"
       width="60.710503"
       height="60.71051"
       x="658.57837"
       y="-567.02692"
       transform="matrix(0,1,-1,0,0,0)" />
    <path
       style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
       d="m 455.58026,688.89301 50.50762,0"
       id="path3777-89-3"
       inkscape:connector-curvature="0" />
    <path
       style="fill:#000000;stroke:#000000;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
       d="m 535.14286,720.48984 0,16.88755"
       id="path3777-89-6-8-2"
       inkscape:connector-curvature="0" />
    <flowRoot
       xml:space="preserve"
       id="flowRoot3471"
       style="font-size:16px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans"><flowRegion
         id="flowRegion3473"><rect
           id="rect3475"
           width="74.285713"
           height="45.714287"
           x="-44.285713"
           y="735.2193"
           style="font-size:16px" /></flowRegion><flowPara
         id="flowPara3477"></flowPara></flowRoot>    <flowRoot
       xml:space="preserve"
       id="flowRoot3479"
       style="font-size:40px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans"
       transform="translate(45.142857,-50)"><flowRegion
         id="flowRegion3481"><rect
           id="rect3483"
           width="110"
           height="85.714287"
           x="-80"
           y="786.64789" /></flowRegion><flowPara
         id="flowPara3485"
         style="font-size:16px">+1</flowPara></flowRoot>    <flowRoot
       xml:space="preserve"
       id="flowRoot3479-7"
       style="font-size:40px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans"
       transform="translate(156.66909,-50.124309)"><flowRegion
         id="flowRegion3481-5"><rect
           id="rect3483-5"
           width="110"
           height="85.714287"
           x="-80"
           y="786.64789" /></flowRegion><flowPara
         id="flowPara3485-2"
         style="font-size:16px">-1</flowPara></flowRoot>    <flowRoot
       xml:space="preserve"
       id="flowRoot3479-3"
       style="font-size:40px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans"
       transform="translate(269.76311,-48.633587)"><flowRegion
         id="flowRegion3481-4"><rect
           id="rect3483-55"
           width="110"
           height="85.714287"
           x="-80"
           y="786.64789" /></flowRegion><flowPara
         id="flowPara3485-6"
         style="font-size:16px">+1</flowPara></flowRoot>    <flowRoot
       xml:space="preserve"
       id="flowRoot3479-7-0"
       style="font-size:40px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans"
       transform="translate(379.28934,-48.757887)"><flowRegion
         id="flowRegion3481-5-0"><rect
           id="rect3483-5-6"
           width="110"
           height="85.714287"
           x="-80"
           y="786.64789" /></flowRegion><flowPara
         id="flowPara3485-2-3"
         style="font-size:16px">+1</flowPara></flowRoot>    <flowRoot
       xml:space="preserve"
       id="flowRoot3479-7-0-3"
       style="font-size:40px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans"
       transform="translate(492.66909,-49.838594)"><flowRegion
         id="flowRegion3481-5-0-0"><rect
           id="rect3483-5-6-4"
           width="110"
           height="85.714287"
           x="-80"
           y="786.64789" /></flowRegion><flowPara
         id="flowPara3485-2-3-3"
         style="font-size:16px">-1</flowPara></flowRoot>    <rect
       style="fill:none;stroke:#000000;stroke-width:1.5"
       id="rect2987-4-2-0-0"
       width="60.710503"
       height="60.71051"
       x="495.79095"
       y="-9.4687366"
       transform="matrix(0,1,-1,0,0,0)" />
    <rect
       style="fill:none;stroke:#000000;stroke-width:1.5"
       id="rect2987-4-7-9-1"
       width="60.710503"
       height="60.71051"
       x="495.77063"
       y="-122.4174"
       transform="matrix(0,1,-1,0,0,0)" />
    <path
       style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
       d="m 10.970758,526.08525 50.50762,0"
       id="path3777-89-6-88"
       inkscape:connector-curvature="0" />
    <rect
       style="fill:none;stroke:#000000;stroke-width:1.5"
       id="rect2987-4-7-9-5-6"
       width="60.710503"
       height="60.71051"
       x="495.18176"
       y="-233.57478"
       transform="matrix(0,1,-1,0,0,0)" />
    <path
       style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
       d="m 122.12815,525.49642 50.50762,0"
       id="path3777-89-6-8-5"
       inkscape:connector-curvature="0" />
    <rect
       style="fill:none;stroke:#000000;stroke-width:1.5"
       id="rect2987-4-7-9-8-8"
       width="60.710503"
       height="60.71051"
       x="495.66888"
       y="-345.79871"
       transform="matrix(0,1,-1,0,0,0)" />
    <path
       style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
       d="m 234.35205,525.98352 50.50762,0"
       id="path3777-89-6-2-9"
       inkscape:connector-curvature="0" />
    <rect
       style="fill:none;stroke:#000000;stroke-width:1.5"
       id="rect2987-4-7-9-5-4-9"
       width="60.710503"
       height="60.71051"
       x="495.08002"
       y="-456.95609"
       transform="matrix(0,1,-1,0,0,0)" />
    <path
       style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
       d="m 345.50944,525.39469 50.50762,0"
       id="path3777-89-6-8-8-6"
       inkscape:connector-curvature="0" />
    <flowRoot
       xml:space="preserve"
       id="flowRoot3479-2"
       style="font-size:40px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans"
       transform="translate(43.575611,-221.60251)"><flowRegion
         id="flowRegion3481-59"><rect
           id="rect3483-3"
           width="110"
           height="85.714287"
           x="-80"
           y="786.64789" /></flowRegion><flowPara
         id="flowPara3485-24"
         style="font-size:16px">(+4)</flowPara></flowRoot>    <flowRoot
       xml:space="preserve"
       id="flowRoot3479-7-8"
       style="font-size:40px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans"
       transform="translate(159.10184,-221.72681)"><flowRegion
         id="flowRegion3481-5-4"><rect
           id="rect3483-5-9"
           width="110"
           height="85.714287"
           x="-80"
           y="786.64789" /></flowRegion><flowPara
         id="flowPara3485-2-32"
         style="font-size:16px">(-1)</flowPara></flowRoot>    <flowRoot
       xml:space="preserve"
       id="flowRoot3479-3-5"
       style="font-size:40px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans"
       transform="translate(272.19586,-220.23609)"><flowRegion
         id="flowRegion3481-4-1"><rect
           id="rect3483-55-2"
           width="110"
           height="85.714287"
           x="-80"
           y="786.64789" /></flowRegion><flowPara
         id="flowPara3485-6-7"
         style="font-size:16px">(0)</flowPara></flowRoot>    <flowRoot
       xml:space="preserve"
       id="flowRoot3479-7-0-9"
       style="font-size:40px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans"
       transform="translate(377.72209,-220.36039)"><flowRegion
         id="flowRegion3481-5-0-6"><rect
           id="rect3483-5-6-2"
           width="110"
           height="85.714287"
           x="-80"
           y="786.64789" /></flowRegion><flowPara
         id="flowPara3485-2-3-9"
         style="font-size:16px">(+1)</flowPara></flowRoot>    <flowRoot
       xml:space="preserve"
       id="flowRoot3479-7-0-3-2"
       style="font-size:40px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans"
       transform="translate(493.10184,-221.4411)"><flowRegion
         id="flowRegion3481-5-0-0-5"><rect
           id="rect3483-5-6-4-9"
           width="110"
           height="85.714287"
           x="-80"
           y="786.64789" /></flowRegion><flowPara
         id="flowPara3485-2-3-3-4"
         style="font-size:16px">(0)</flowPara></flowRoot>    <rect
       style="fill:none;stroke:#000000;stroke-width:1.5"
       id="rect2987-4-2-0-0-6"
       width="60.710503"
       height="60.71051"
       x="826.46362"
       y="-9.4687328"
       transform="matrix(0,1,-1,0,0,0)" />
    <rect
       style="fill:none;stroke:#000000;stroke-width:1.5"
       id="rect2987-4-7-9-1-0"
       width="60.710503"
       height="60.71051"
       x="826.4433"
       y="-122.41737"
       transform="matrix(0,1,-1,0,0,0)" />
    <path
       style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
       d="m 10.970751,856.75795 50.50762,0"
       id="path3777-89-6-88-2"
       inkscape:connector-curvature="0" />
    <rect
       style="fill:none;stroke:#000000;stroke-width:1.5"
       id="rect2987-4-7-9-5-6-1"
       width="60.710503"
       height="60.71051"
       x="825.85443"
       y="-233.57478"
       transform="matrix(0,1,-1,0,0,0)" />
    <path
       style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
       d="m 122.12814,856.16912 50.50762,0"
       id="path3777-89-6-8-5-8"
       inkscape:connector-curvature="0" />
    <rect
       style="fill:none;stroke:#000000;stroke-width:1.5"
       id="rect2987-4-7-9-8-8-3"
       width="60.710503"
       height="60.71051"
       x="826.34155"
       y="-345.79868"
       transform="matrix(0,1,-1,0,0,0)" />
    <path
       style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
       d="m 234.35204,856.65622 50.50762,0"
       id="path3777-89-6-2-9-1"
       inkscape:connector-curvature="0" />
    <rect
       style="fill:none;stroke:#000000;stroke-width:1.5"
       id="rect2987-4-7-9-5-4-9-5"
       width="60.710503"
       height="60.71051"
       x="825.75269"
       y="-456.95602"
       transform="matrix(0,1,-1,0,0,0)" />
    <path
       style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
       d="m 345.50943,856.06739 50.50762,0"
       id="path3777-89-6-8-8-6-5"
       inkscape:connector-curvature="0" />
    <flowRoot
       xml:space="preserve"
       id="flowRoot3479-2-6"
       style="font-size:40px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans"
       transform="translate(43.575601,109.07018)"><flowRegion
         id="flowRegion3481-59-6"><rect
           id="rect3483-3-9"
           width="110"
           height="85.714287"
           x="-80"
           y="786.64789" /></flowRegion><flowPara
         id="flowPara3485-24-0"
         style="font-size:16px">(+5)</flowPara></flowRoot>    <flowRoot
       xml:space="preserve"
       id="flowRoot3479-7-8-0"
       style="font-size:40px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans"
       transform="translate(159.10183,108.94588)"><flowRegion
         id="flowRegion3481-5-4-7"><rect
           id="rect3483-5-9-7"
           width="110"
           height="85.714287"
           x="-80"
           y="786.64789" /></flowRegion><flowPara
         id="flowPara3485-2-32-2"
         style="font-size:16px">(-2)</flowPara></flowRoot>    <flowRoot
       xml:space="preserve"
       id="flowRoot3479-3-5-2"
       style="font-size:40px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans"
       transform="translate(266.19585,110.4366)"><flowRegion
         id="flowRegion3481-4-1-1"><rect
           id="rect3483-55-2-9"
           width="110"
           height="85.714287"
           x="-80"
           y="786.64789" /></flowRegion><flowPara
         id="flowPara3485-6-7-3"
         style="font-size:16px">(+1)</flowPara></flowRoot>    <flowRoot
       xml:space="preserve"
       id="flowRoot3479-7-0-9-3"
       style="font-size:40px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans"
       transform="translate(377.72208,110.3123)"><flowRegion
         id="flowRegion3481-5-0-6-6"><rect
           id="rect3483-5-6-2-3"
           width="110"
           height="85.714287"
           x="-80"
           y="786.64789" /></flowRegion><flowPara
         id="flowPara3485-2-3-9-1"
         style="font-size:16px">(+2</flowPara></flowRoot>    <flowRoot
       xml:space="preserve"
       id="flowRoot3479-7-0-3-2-8"
       style="font-size:40px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans"
       transform="translate(491.10183,109.23159)"><flowRegion
         id="flowRegion3481-5-0-0-5-4"><rect
           id="rect3483-5-6-4-9-6"
           width="110"
           height="85.714287"
           x="-80"
           y="786.64789" /></flowRegion><flowPara
         id="flowPara3485-2-3-3-4-6"
         style="font-size:16px">(-1)</flowPara></flowRoot>    <rect
       style="fill:none;stroke:#000000;stroke-width:1.5"
       id="rect2987-4-7-9-5-4-9-5-2"
       width="60.710503"
       height="60.71051"
       x="824.35522"
       y="-567.02686"
       transform="matrix(0,1,-1,0,0,0)" />
    <path
       style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
       d="m 455.58028,854.66991 50.50762,0"
       id="path3777-89-6-8-8-6-5-2"
       inkscape:connector-curvature="0" />
    <flowRoot
       xml:space="preserve"
       id="flowRoot3479-7-0-3-2-8-6"
       style="font-size:40px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans"
       transform="translate(605.17268,107.83412)"><flowRegion
         id="flowRegion3481-5-0-0-5-4-4"><rect
           id="rect3483-5-6-4-9-6-3"
           width="110"
           height="85.714287"
           x="-80"
           y="786.64789" /></flowRegion><flowPara
         id="flowPara3485-2-3-3-4-6-4"
         style="font-size:16px">(0)</flowPara></flowRoot>    <g
       id="g3904"
       transform="matrix(0,1,-1,0,577.86967,516.56898)">
      <path
         inkscape:connector-curvature="0"
         id="path3777-89-6-88-8"
         d="m 77.461951,372.1025 50.789249,0"
         style="fill:none;stroke:#000000;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1" />
      <path
         inkscape:connector-curvature="0"
         id="path3777-89-6-88-8-6"
         d="m 117.74324,362.64707 10.81974,9.16205"
         style="fill:none;stroke:#000000;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1" />
      <path
         inkscape:connector-curvature="0"
         id="path3777-89-6-88-8-6-1"
         d="m 128.69588,372.05809 -10.81975,9.16206"
         style="fill:none;stroke:#000000;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1" />
    </g>
    <g
       id="g3904-3"
       transform="matrix(0,1,-1,0,579.07647,689.28327)">
      <path
         inkscape:connector-curvature="0"
         id="path3777-89-6-88-8-2"
         d="m 77.461951,372.1025 50.789249,0"
         style="fill:none;stroke:#000000;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1" />
      <path
         inkscape:connector-curvature="0"
         id="path3777-89-6-88-8-6-7"
         d="m 117.74324,362.64707 10.81974,9.16205"
         style="fill:none;stroke:#000000;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1" />
      <path
         inkscape:connector-curvature="0"
         id="path3777-89-6-88-8-6-1-4"
         d="m 128.69588,372.05809 -10.81975,9.16206"
         style="fill:none;stroke:#000000;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1" />
    </g>
  </g>
</svg>