From dbc3a7c5d41a7b392cdcd51a90f3a419dbaed179 Mon Sep 17 00:00:00 2001 From: Masaya Tojo Date: Sun, 16 Jun 2024 15:31:16 +0900 Subject: Add number (product, sum) implementations --- algebraic-structures.private.number.sum.scm | 8 ++++++++ 1 file changed, 8 insertions(+) create mode 100644 algebraic-structures.private.number.sum.scm (limited to 'algebraic-structures.private.number.sum.scm') diff --git a/algebraic-structures.private.number.sum.scm b/algebraic-structures.private.number.sum.scm new file mode 100644 index 0000000..c0db226 --- /dev/null +++ b/algebraic-structures.private.number.sum.scm @@ -0,0 +1,8 @@ +(module (algebraic-structures private number sum) (<> unit inv) + (import scheme) + + (define (<> x y) (+ x y)) + + (define unit 0) + + (define (inv x) (- x))) -- cgit v1.2.3