每行有且只有一个元素是1,每列也有且只有一个元素是1,其余元素全为0的[tex=0.643x0.786]SBMIs+VUk7//BOpfqlQl0w==[/tex]级矩阵称为[tex=0.643x0.786]SBMIs+VUk7//BOpfqlQl0w==[/tex]级置换矩阵.设[tex=0.643x1.0]Ft8KOBgb78fnKY0jEt4Rsg==[/tex]是[tex=0.643x0.786]SBMIs+VUk7//BOpfqlQl0w==[/tex]级置换矩阵,它的第[tex=0.357x1.0]5vVfAZliYwqMw8JaLE+iEA==[/tex]列的元素1位于第[tex=0.571x1.214]F1613pOqI8JGJ+ebii6MRw==[/tex]行,[tex=5.143x1.214]NJQeeRvYWMC0WFqmF1Wu3qijM776Tz9QRcQN6EAF2BE=[/tex].证明:[tex=0.643x1.0]Ft8KOBgb78fnKY0jEt4Rsg==[/tex]可逆,并且[tex=3.5x1.214]VKWJjoLQOQfdUr5NU9H6RGsiu6hmoNMwfW+VblUNbvM=[/tex],从而[tex=1.714x1.214]L8Mw5wEvhH8aiYHbV1xTFQ==[/tex]是把[tex=0.5x1.0]ycRjqHa76IDpEZtluYQxdQ==[/tex]的d第[tex=4.643x1.214]5lnt9kVK5uk9mcal1fWQWLl7wiUHiN3MgG6HOzHqrUw=[/tex]行分别调到第[tex=4.5x1.214]/DIFL7ciLMx+nwGOAV82kA==[/tex]的位置得到的矩阵;[tex=1.714x1.214]L8Mw5wEvhH8aiYHbV1xTFQ==[/tex]也是把[tex=0.5x1.0]ycRjqHa76IDpEZtluYQxdQ==[/tex]的第[tex=4.5x1.214]/DIFL7ciLMx+nwGOAV82kA==[/tex]列分别调到第[tex=4.643x1.214]5lnt9kVK5uk9mcal1fWQWLl7wiUHiN3MgG6HOzHqrUw=[/tex]列位置得到的矩阵.
举一反三
- 每行有且只有一个元素是1,每列也有且只有一个元素是1,其余元素全为0的[tex=0.643x0.786]SBMIs+VUk7//BOpfqlQl0w==[/tex]级矩阵称为[tex=0.643x0.786]SBMIs+VUk7//BOpfqlQl0w==[/tex]级置换矩阵.设[tex=0.643x1.0]Ft8KOBgb78fnKY0jEt4Rsg==[/tex]是[tex=0.643x0.786]SBMIs+VUk7//BOpfqlQl0w==[/tex]级置换矩阵,它的第[tex=0.357x1.0]5vVfAZliYwqMw8JaLE+iEA==[/tex]列的元素1位于第[tex=0.571x1.214]F1613pOqI8JGJ+ebii6MRw==[/tex]行,[tex=5.143x1.214]NJQeeRvYWMC0WFqmF1Wu3qijM776Tz9QRcQN6EAF2BE=[/tex].证明:在一个[tex=0.643x0.786]SBMIs+VUk7//BOpfqlQl0w==[/tex]级矩阵[tex=0.786x1.0]Yn3GgEZev6SOu2r4v1WnCw==[/tex]的左边乘上置换矩阵[tex=0.643x1.0]Ft8KOBgb78fnKY0jEt4Rsg==[/tex],就相当于把[tex=0.786x1.0]Yn3GgEZev6SOu2r4v1WnCw==[/tex]的第[tex=4.5x1.214]/DIFL7ciLMx+nwGOAV82kA==[/tex]行分别调到第[tex=4.643x1.214]5lnt9kVK5uk9mcal1fWQWLl7wiUHiN3MgG6HOzHqrUw=[/tex]行的位置;在[tex=0.786x1.0]Yn3GgEZev6SOu2r4v1WnCw==[/tex]的右边乘上置换矩阵[tex=0.643x1.0]Ft8KOBgb78fnKY0jEt4Rsg==[/tex],就相当于把[tex=0.786x1.0]Yn3GgEZev6SOu2r4v1WnCw==[/tex]的第[tex=4.643x1.214]5lnt9kVK5uk9mcal1fWQWLl7wiUHiN3MgG6HOzHqrUw=[/tex]列分别调到第[tex=4.5x1.214]/DIFL7ciLMx+nwGOAV82kA==[/tex]列的位置.
- 每行有且只有一个元素是1,每列也有且只有一个元素是1,其余元素全为0的[tex=0.643x0.786]SBMIs+VUk7//BOpfqlQl0w==[/tex]级矩阵称为[tex=0.643x0.786]SBMIs+VUk7//BOpfqlQl0w==[/tex]级置换矩阵.设[tex=0.643x1.0]Ft8KOBgb78fnKY0jEt4Rsg==[/tex]是[tex=0.643x0.786]SBMIs+VUk7//BOpfqlQl0w==[/tex]级置换矩阵,它的第[tex=0.357x1.0]5vVfAZliYwqMw8JaLE+iEA==[/tex]列的元素1位于第[tex=0.571x1.214]F1613pOqI8JGJ+ebii6MRw==[/tex]行,[tex=5.143x1.214]NJQeeRvYWMC0WFqmF1Wu3qijM776Tz9QRcQN6EAF2BE=[/tex].证明:[tex=7.786x1.357]dFLXr1nquOH+5M1N8Lsz/HWcDQPs1Ob/K2VZRzKosdpUzq48vVImN/C/s1+A2RTQP24bNh0FZB7YfvuOHRsndM+RES3g+vLZKxBOOXdnCBZs4tHYsR7dPOYKvTXKNh0z[/tex].
- 设[tex=0.786x1.0]Yn3GgEZev6SOu2r4v1WnCw==[/tex]是一个[tex=0.643x0.786]SBMIs+VUk7//BOpfqlQl0w==[/tex]级矩阵,且[tex=7.429x1.357]k8PvTJe4iQVkvPfhUhxDGOopV8O5ML2D6BaqvZvRh0Q=[/tex].证明:存在一个[tex=0.643x0.786]SBMIs+VUk7//BOpfqlQl0w==[/tex]级可逆矩阵[tex=0.643x1.0]Ft8KOBgb78fnKY0jEt4Rsg==[/tex],使[tex=3.143x1.214]RCjQUU0FKROBgYYeD3/tMA==[/tex]的后[tex=1.857x1.071]q5hNFLJWqjemDDJrfp9uSA==[/tex]行的元素全为0.
- 设[tex=4.643x1.214]5lnt9kVK5uk9mcal1fWQWLl7wiUHiN3MgG6HOzHqrUw=[/tex]是[tex=4.5x1.214]/DIFL7ciLMx+nwGOAV82kA==[/tex]的一个排列,设[tex=3.571x1.357]aVLZXZOyFvu0YW8S/Fna3xaGJnoK5u4oKwxFaralEcU=[/tex]是[tex=0.643x0.786]SBMIs+VUk7//BOpfqlQl0w==[/tex]级矩阵,令[tex=14.286x5.929]tAg4kjefm91yBdigy4ffjNvplaKi6hFK0zTGvHxXpK610+ELU1IiiBcUcWuxQ8JlsHQRZAcj6yLdteQ6FtodfhfBXI3Ku8p1ZNxpiPGNHsiBqOluLLnOYyHtiIvBpE5wziC7IZA2OS3aT5vxAm3gAmZejencdDOI3hpbNUOybo1IWFxQYygW0vVQ/VKHKW+NWux0W9l08tfWgg+L740LMTphJ020G2Vs0KREqEtmi/H4CPKvEf3CKTGMf5/iR5kXCp4EThG2hWuz6qSGVGxxEEoRA/+ZkFWjm/ayA8dTSLYn59EUnk/HtDLXb48AqWL4OR9VEyJ32Fk9OO5c94uRsEmXU0+lVUgENU/2JFZIcH8aipS7lmBAfshpDi8kUvaN[/tex]证明:[tex=2.286x1.0]vHpdSoBGo8JXAVzdKGQ7UA==[/tex].
- 设[tex=4.643x1.214]5lnt9kVK5uk9mcal1fWQWLl7wiUHiN3MgG6HOzHqrUw=[/tex]是[tex=4.5x1.214]/DIFL7ciLMx+nwGOAV82kA==[/tex]的一个排列,设[tex=3.571x1.357]aVLZXZOyFvu0YW8S/Fna3xaGJnoK5u4oKwxFaralEcU=[/tex]是[tex=0.643x0.786]SBMIs+VUk7//BOpfqlQl0w==[/tex]级矩阵,令[tex=14.286x5.929]tAg4kjefm91yBdigy4ffjNvplaKi6hFK0zTGvHxXpK610+ELU1IiiBcUcWuxQ8JlsHQRZAcj6yLdteQ6FtodfhfBXI3Ku8p1ZNxpiPGNHsiBqOluLLnOYyHtiIvBpE5wziC7IZA2OS3aT5vxAm3gAmZejencdDOI3hpbNUOybo1IWFxQYygW0vVQ/VKHKW+NWux0W9l08tfWgg+L740LMTphJ020G2Vs0KREqEtmi/H4CPKvEf3CKTGMf5/iR5kXCp4EThG2hWuz6qSGVGxxEEoRA/+ZkFWjm/ayA8dTSLYn59EUnk/HtDLXb48AqWL4OR9VEyJ32Fk9OO5c94uRsEmXU0+lVUgENU/2JFZIcH8aipS7lmBAfshpDi8kUvaN[/tex]证明:[tex=2.286x1.0]vHpdSoBGo8JXAVzdKGQ7UA==[/tex].