10 lines
190 B
Text
10 lines
190 B
Text
Set: pp::colors
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Set: pp::unicode
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import "kernel"
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import "Nat"
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universe M1 ≥ 1
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universe U ≥ M1+1
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universe M2 ≥ 1
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universe U ≥ M2+1
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universe Z ≥ M1+1 ⊔ M2+1
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universe U ≥ Z+1
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