Macaulay2 / Macaulay2/M2

concatenation of homogeneous matrices of nonzero degree does not preserve degree

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#607 3 comments 0 reactions 1 assignee View on GitHub

@DanGrayson is already working on this.

Since May 16, 2017.

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Description

Concatenation is not respecting degrees of matrices.
```
S = ZZ/101[a..d]
m = map(S^1, S^1, {{a^2}}, Degree=>2)
isHomogeneous m
isHomogeneous(m | m)
isHomogeneous(m || m)
degree m
degree (m|m) -- should be {2}
assert(degree m == degree (m|m))
assert(degree m == degree(m||m))
```

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