一个带状矩阵的图示：<img data-key="0" src="http://imagev2.xmcdn.com/storages/580b-audiofreehighqps/75/57/GAqh4zIMi8DUAAAo6wQGINTS.jpg!op_type=4&amp;device_type=ios&amp;upload_type=attachment&amp;name=mobile_large" alt="" data-origin="http://imagev2.xmcdn.com/storages/580b-audiofreehighqps/75/57/GAqh4zIMi8DUAAAo6wQGINTS.jpg?op_type=0" data-large="http://imagev2.xmcdn.com/storages/580b-audiofreehighqps/75/57/GAqh4zIMi8DUAAAo6wQGINTS.jpg!op_type=4&amp;device_type=ios&amp;upload_type=attachment&amp;name=mobile_large" data-large-width="750" data-large-height="619.7368421052631" data-preview="http://imagev2.xmcdn.com/storages/580b-audiofreehighqps/75/57/GAqh4zIMi8DUAAAo6wQGINTS.jpg!op_type=4&amp;device_type=ios&amp;upload_type=attachment&amp;name=mobile_small" data-preview-width="140" data-preview-height="115.6842105263158">不同宽度的随机带状矩阵下，随机带状矩阵本征向量的分量的图示：<img data-key="1" src="http://imagev2.xmcdn.com/storages/dd32-audiofreehighqps/C2/05/GKwRIaIMi8EgAAD_XAQGIOQN.png!op_type=4&amp;device_type=ios&amp;upload_type=attachment&amp;name=mobile_large" alt="" data-origin="http://imagev2.xmcdn.com/storages/dd32-audiofreehighqps/C2/05/GKwRIaIMi8EgAAD_XAQGIOQN.png?op_type=0" data-large="http://imagev2.xmcdn.com/storages/dd32-audiofreehighqps/C2/05/GKwRIaIMi8EgAAD_XAQGIOQN.png!op_type=4&amp;device_type=ios&amp;upload_type=attachment&amp;name=mobile_large" data-large-width="750" data-large-height="562.379421221865" data-preview="http://imagev2.xmcdn.com/storages/dd32-audiofreehighqps/C2/05/GKwRIaIMi8EgAAD_XAQGIOQN.png!op_type=4&amp;device_type=ios&amp;upload_type=attachment&amp;name=mobile_small" data-preview-width="140" data-preview-height="104.9774919614148"><img data-key="2" src="http://imagev2.xmcdn.com/storages/8cfc-audiofreehighqps/FF/AA/GAqhp50Mi8FSAAML5gQGIO2z.png!op_type=4&amp;device_type=ios&amp;upload_type=attachment&amp;name=mobile_large" alt="" data-origin="http://imagev2.xmcdn.com/storages/8cfc-audiofreehighqps/FF/AA/GAqhp50Mi8FSAAML5gQGIO2z.png?op_type=0" data-large="http://imagev2.xmcdn.com/storages/8cfc-audiofreehighqps/FF/AA/GAqhp50Mi8FSAAML5gQGIO2z.png!op_type=4&amp;device_type=ios&amp;upload_type=attachment&amp;name=mobile_large" data-large-width="750" data-large-height="562.379421221865" data-preview="http://imagev2.xmcdn.com/storages/8cfc-audiofreehighqps/FF/AA/GAqhp50Mi8FSAAML5gQGIO2z.png!op_type=4&amp;device_type=ios&amp;upload_type=attachment&amp;name=mobile_small" data-preview-width="140" data-preview-height="104.9774919614148"><img data-key="3" src="http://imagev2.xmcdn.com/storages/291d-audiofreehighqps/3E/CD/GKwRIRwMi8FmAAF2xQQGIPIb.png!op_type=4&amp;device_type=ios&amp;upload_type=attachment&amp;name=mobile_large" alt="" data-origin="http://imagev2.xmcdn.com/storages/291d-audiofreehighqps/3E/CD/GKwRIRwMi8FmAAF2xQQGIPIb.png?op_type=0" data-large="http://imagev2.xmcdn.com/storages/291d-audiofreehighqps/3E/CD/GKwRIRwMi8FmAAF2xQQGIPIb.png!op_type=4&amp;device_type=ios&amp;upload_type=attachment&amp;name=mobile_large" data-large-width="750" data-large-height="562.379421221865" data-preview="http://imagev2.xmcdn.com/storages/291d-audiofreehighqps/3E/CD/GKwRIRwMi8FmAAF2xQQGIPIb.png!op_type=4&amp;device_type=ios&amp;upload_type=attachment&amp;name=mobile_small" data-preview-width="140" data-preview-height="104.9774919614148"><hr style="border:0px;margin:20px 0px;background:#ddd;display:inline-block;width:100%;border-style:solid;height:1px;">微信公众号：搜“大老李聊数学” 知乎：搜level 10的“大老李”

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