Einstein notation - Wikipedia
General Matrix Multiplication with Partitioning and Summation process
Matrix multiplication - Wikipedia
Assembly and factorization of a frontal matrix with three children
Frobenius scalar product is complete : r/askmath
Matrix multiplication (d = 2) expressed in the paradigm of Equation
The Palindrome, Tivadar Danka
Epsilons, no. 3: The LU decomposition - by Tivadar Danka
Dense Linear Algebra Our Pattern Language