Initial Commit.

2026-06-23 21:47:51 +08:00
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+# IsLowerTriangular
+
+Check if a square matrix is lower triangular.
+
+```
+bool matrix::IsLowerTriangular();
+
+```
+
+Return Value
+
+True if square matrix is lower triangular.
+
+Note
+
+Zero matrix of n-by-n size is triangular. Diagonal matrix is triangular. Bidiagonal matrix is triangular.
+
+Check if upper triangular part above the main diagonal contains all zeros.
+
+Lower triangular matrix
+
+```
+ 
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+```