Research Article
Formalization of Linear Space Theory in the Higher-Order Logic Proving System
val s = “s: num_field”; | val membership = “0c IN s ∧ 1c IN s ∧ | !a:complex b:complex. if a IN s ∧ b IN s | then (a + b IN s) ∧ (a − b IN s) ∧ (a * b IN s) ∧ (if a < > 0 then b/a IN s else a = 0c) | else F”; |
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