A unit matrix is an integer matrix consisting of all 1s. The m×n unit matrix is often denoted J_(m n), or J_n if m = n. Square unit matrices J_n have determinant 0 for n>=2. An m×n unit matrix can be generated in the Wolfram Language as ConstantArray[1, {m, n}]. Let R be a commutative ring with a multiplicative identity.
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Jonathan is doing really well in all of his classes this semester, 5 A’s & 2 B’s (he has a computer essentials class instead of PLC). In his Algebra class that Nathan is helping him with he has an A+.
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