Step
*
1
2
of Lemma
tsqrt-unique
1. n : ℕ
2. x : ℕ
3. t(x) ≤ n
4. n < t(x + 1)
5. t(tsqrt(n)) ≤ n
6. n < t(tsqrt(n) + 1)
7. ¬x < tsqrt(n)
⊢ x = tsqrt(n) ∈ ℤ
BY
{ (Decide ⌜tsqrt(n) < x⌝⋅ THEN Auto) }
1
1. n : ℕ
2. x : ℕ
3. t(x) ≤ n
4. n < t(x + 1)
5. t(tsqrt(n)) ≤ n
6. n < t(tsqrt(n) + 1)
7. ¬x < tsqrt(n)
8. tsqrt(n) < x
⊢ x = tsqrt(n) ∈ ℤ
Latex:
Latex:
1. n : \mBbbN{}
2. x : \mBbbN{}
3. t(x) \mleq{} n
4. n < t(x + 1)
5. t(tsqrt(n)) \mleq{} n
6. n < t(tsqrt(n) + 1)
7. \mneg{}x < tsqrt(n)
\mvdash{} x = tsqrt(n)
By
Latex:
(Decide \mkleeneopen{}tsqrt(n) < x\mkleeneclose{}\mcdot{} THEN Auto)
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