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Definition: matrix multiplication


Multiplying the content of two x-y matrices together for screen rendering, scientific simulations and AI processing. Matrix multiplication provides fast multiply and add operations in parallel, which is built into the hardware of GPUs and AI accelerators (see Tensor core). See GPU, compute-in-memory and AI accelerator.




The Rules
The number of rows in the first matrix (2 in this example) must equal the number of columns in the second matrix (also 2). The resulting matrix has the same number of rows as the first and same number of columns as the second (2 and 2).






An X-Y Matrix
A matrix is an array of elements in row and column form.