Metamath Proof Explorer
Description: The surreals are closed under multiplication. Theorem 8(i) of Conway
p. 19. (Contributed by Scott Fenton, 6-Mar-2025)
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Ref |
Expression |
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Hypotheses |
mulscld.1 |
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mulscld.2 |
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Assertion |
mulscld |
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Proof
Step |
Hyp |
Ref |
Expression |
1 |
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mulscld.1 |
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2 |
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mulscld.2 |
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3 |
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mulscl |
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4 |
1 2 3
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syl2anc |
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