josdejong/mathjs

Make documentation clearer that the top-level elements of a 2D rectangular array are considered **rows** of matrices.

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#2,618 opened on Jul 6, 2022

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Description

I think it would be very helpful if the docs for MathJS mentioned that math.multiply on matrices was pre-multiplication, rather than post-multiplication.

Especially given that all the language at https://mathjs.org/docs/reference/functions/multiply.html strongly implies that math.multiply(a, b) is the product ab for the rest of the types. The only indication that it's pre-multiplication for matrices is somewhat buried down in the example, where it's only implicit in the dimensions of the input matrices.

Thanks! :)

Contributor guide

Research direction
Read the current documentation on matrix multiplication and the concept of rows/columns in matrices. Propose wording changes to explicitly state that the first dimension corresponds to rows.
Tech stack
javascript
Domain
documentation
Issue type
Documentation
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
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1-3 hours
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Active
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Clear
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Git
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85