## 1261 Reputation

18 years, 35 days

## Maple linear solvers....

Maple 2017

Given  3000 linear equations in 3000 unknowns, with coefficients in a field of rationals with one algebraic number extension, which Maple solver would be fastest in solving the system?

## What is the problem here?...

Maple 2017

with(GroupTheory):
MinimumPermutationRepresentationDegree(PermutationGroup({[[2, 3], [4, 5]], [[2, 5], [3, 4]]}, degree = 5, supergroup = PermutationGroup({[[2, 3, 4]], [[1, 2], [4, 5]]}, degree = 5)));

#an error appears in Maple 2017

## Group theory. ...

Maple

Is there a Maple function that given a group gives its name?

## Delta. ...

Maple

How do I make my Maple use delta instead of d for differential equations?

example:

## Function on sets....

Maple

What Maple function answers the following:

Produce (a minimal set of) sets that generate, by union, every intersection of sets given.

Examples:
F({1, 2, 3}, {1, 4, 5}, {2, 3, 4});

{}, {1}, {4}, {5}, {2, 3};

F({1, 2, 3, 6}, {1, 4, 5, 6}, {2, 3, 4, 6});
{1}, {4}, {5}, {6}, {2, 3};

Correction:
Produce (a minimal set of) disjoint sets that generate, by union, every intersection of sets given.

Intersection and union here are n-ary operators and every combination of sets is considered for intersection.

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