Description: Lemma for lgsquad . Count the members of S with even coordinates, and combine with lgsquadlem1 to get the total count of lattice points in S (up to parity). (Contributed by Mario Carneiro, 18-Jun-2015)
Ref | Expression | ||
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Hypotheses | lgseisen.1 | |
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lgseisen.2 | |
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lgseisen.3 | |
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lgsquad.4 | |
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lgsquad.5 | |
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lgsquad.6 | |
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Assertion | lgsquadlem2 | |