i1 : R = ZZ/101[a..d] o1 = R o1 : PolynomialRing
i2 : p = matrix {{a,b},{c,d}} o2 = | a b | | c d | 2 2 o2 : Matrix R <-- R
i3 : trace p o3 = a + d o3 : R
The source of this document is in /build/reproducible-path/macaulay2-1.25.06+ds/M2/Macaulay2/packages/Macaulay2Doc/doc7.m2:280:0.