MeatAxe: zsi - Sum and Intersection

MeatAxe 2.4

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zsi - Sum and Intersection

## Command Line

    zsi [Options] Space1 Space2 Sum Int

Options
  Standard options, see Standard Command Line Options

Space1
  First space.

Space2
  Second space.

Sum
  Sum.

Int
  Intersection.

## Input Files

Space1
  First space.

Space2
  Second space.

## Output Files

Sum
  Sum.

Int
  Intersection.

## Description

This program reads in two spaces from Space1 and Space2 and writes out their sum and intersection, in semi-echelon form, to Sum and Int, respectively. The input files must be matrices over the same field and with the same number of columns. They need not be in echelon form.

There must be enough memory to hold two copies of each of the two spaces at the same time.