18 lines
526 B
Text
18 lines
526 B
Text
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variable matrix : Nat → Nat → Type
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variable mul {m n p : Nat} : matrix n m → matrix m p → matrix n p
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infixl 70 * : mul
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axiom mul_assoc {m n p o : Nat} (M : matrix n m) (N : matrix m p) (P : matrix p o) :
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M * (N * P) = (M * N) * P
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add_rewrite mul_assoc
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-- Create an example
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variable m1 : matrix 2 3
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variable m2 : matrix 3 4
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variable m3 : matrix 4 2
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variable m4 : matrix 2 6
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(*
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local t = parse_lean("m1 * (m2 * (m3 * m4))")
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print("before simp: " .. tostring(t))
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print("after simp: " .. tostring(simplify(t)))
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*)
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