List questions from unimodular-matrices

Published on 17 Mar 2026 - 11:35

421

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Is this block matrix totally unimodular?

Published on 17 Mar 2026 - 10:29

1.6k

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If matrix $A$ is totally unimodular, then matrix $\begin{bmatrix} A &\pm A\end{bmatrix}$ is also totally unimodular

Published on 17 Mar 2026 - 12:33

89

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Find explicitely an element of SL$_2(\mathbb Z)$

Published on 19 Mar 2026 - 18:26

64

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(reference-request) Theorem of Frobenius regarding transforming integer-valued matrix in diagonal matrix with divisibility conditions

Published on 19 Mar 2026 - 19:27

69

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Proof $D_2^{-1}D_1$ is a unimodular matrix.

Published on 19 Mar 2026 - 14:47

79

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Ring of invariants of unimodular matrices acting on real square matrices

Published on 22 Mar 2026 - 20:47

86

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Reference for a result in Abelian Group Theory

Published on 19 Mar 2026 - 10:51

45

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Totally Unimodular Matrices

Published on 19 Mar 2026 - 15:50

110

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How can I compute a 3 by 3 unimodular matrix which produces an infinite number of Fermat near misses?

Published on 22 Mar 2026 - 4:43

1.1k

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How to prove that the matrix is totally unimodular?

Published on 22 Mar 2026 - 2:40

275

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Making Matrix Totally Unimodular

Published on 16 Mar 2026 - 21:45

239

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How can you verify that a 3 by 3 unimodular matrix generates an infinite number of Fermat near misses?

Published on 19 Mar 2026 - 19:57

233

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Is there a standard name for the groups $SL(n,\mathbb Z)$ or $GL(n,\mathbb Z)$?

Published on 16 Mar 2026 - 23:15

226

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Total Unimodularity of set of equality and inequality constraints by partitioning of rows

Published on 16 Mar 2026 - 23:37

List Question

Does this property imply total unimodularity?

Is this block matrix totally unimodular?

If matrix $A$ is totally unimodular, then matrix $\begin{bmatrix} A &\pm A\end{bmatrix}$ is also totally unimodular

Find explicitely an element of SL$_2(\mathbb Z)$

(reference-request) Theorem of Frobenius regarding transforming integer-valued matrix in diagonal matrix with divisibility conditions

Proof $D_2^{-1}D_1$ is a unimodular matrix.

Ring of invariants of unimodular matrices acting on real square matrices

Reference for a result in Abelian Group Theory

Totally Unimodular Matrices

How can I compute a 3 by 3 unimodular matrix which produces an infinite number of Fermat near misses?

How to prove that the matrix is totally unimodular?

Making Matrix Totally Unimodular

How can you verify that a 3 by 3 unimodular matrix generates an infinite number of Fermat near misses?

Is there a standard name for the groups $SL(n,\mathbb Z)$ or $GL(n,\mathbb Z)$?

Total Unimodularity of set of equality and inequality constraints by partitioning of rows

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