Description: Add a zero in the tenths place. (Contributed by Thierry Arnoux, 16-Dec-2021)
Ref | Expression | ||
---|---|---|---|
Hypothesis | dp0u.1 | ⊢ 𝐴 ∈ ℕ0 | |
Assertion | dp0u | ⊢ ( 𝐴 . 0 ) = 𝐴 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | dp0u.1 | ⊢ 𝐴 ∈ ℕ0 | |
2 | 0re | ⊢ 0 ∈ ℝ | |
3 | 1 2 | dpval3 | ⊢ ( 𝐴 . 0 ) = _ 𝐴 0 |
4 | 1 | dp20u | ⊢ _ 𝐴 0 = 𝐴 |
5 | 3 4 | eqtri | ⊢ ( 𝐴 . 0 ) = 𝐴 |