Description: 11 is 1 times 10 to the power of 1, plus 1. (Contributed by AV, 4-Aug-2020) (Revised by AV, 9-Sep-2021)
Ref | Expression | ||
---|---|---|---|
Assertion | 1t10e1p1e11 | ⊢ ; 1 1 = ( ( 1 · ( ; 1 0 ↑ 1 ) ) + 1 ) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | dfdec10 | ⊢ ; 1 1 = ( ( ; 1 0 · 1 ) + 1 ) | |
2 | ax-1cn | ⊢ 1 ∈ ℂ | |
3 | 10nn | ⊢ ; 1 0 ∈ ℕ | |
4 | 3 | nncni | ⊢ ; 1 0 ∈ ℂ |
5 | exp1 | ⊢ ( ; 1 0 ∈ ℂ → ( ; 1 0 ↑ 1 ) = ; 1 0 ) | |
6 | 4 5 | ax-mp | ⊢ ( ; 1 0 ↑ 1 ) = ; 1 0 |
7 | 6 | eqcomi | ⊢ ; 1 0 = ( ; 1 0 ↑ 1 ) |
8 | 7 | oveq2i | ⊢ ( 1 · ; 1 0 ) = ( 1 · ( ; 1 0 ↑ 1 ) ) |
9 | 2 4 8 | mulcomli | ⊢ ( ; 1 0 · 1 ) = ( 1 · ( ; 1 0 ↑ 1 ) ) |
10 | 9 | oveq1i | ⊢ ( ( ; 1 0 · 1 ) + 1 ) = ( ( 1 · ( ; 1 0 ↑ 1 ) ) + 1 ) |
11 | 1 10 | eqtri | ⊢ ; 1 1 = ( ( 1 · ( ; 1 0 ↑ 1 ) ) + 1 ) |