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Step * 2 of Lemma not-same-parity-implies

.....falsecase..... 
1. n : ℤ
2. m : ℤ
3. ¬↑isOdd(m)
4. ¬↑isEven(n)
5. ¬↑isEven(n)
⊢ ↑isOdd(m - 1)
BY
{ ((RWO "even-iff-not-odd<" (-3) THENA Auto) THEN FLemma `even-implies` [-3] THEN Auto) }

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Latex:

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Latex:
.....falsecase..... 
1.  n  :  \mBbbZ{}
2.  m  :  \mBbbZ{}
3.  \mneg{}\muparrow{}isOdd(m)
4.  \mneg{}\muparrow{}isEven(n)
5.  \mneg{}\muparrow{}isEven(n)
\mvdash{}  \muparrow{}isOdd(m  -  1)


By

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Latex:
((RWO  "even-iff-not-odd<"  (-3)  THENA  Auto)  THEN  FLemma  `even-implies`  [-3]  THEN  Auto)

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