Description: The slots Base and .ef are different. (Contributed by AV, 21-Sep-2020)
| Ref | Expression | ||
|---|---|---|---|
| Assertion | basendxnedgfndx | ⊢ ( Base ‘ ndx ) ≠ ( .ef ‘ ndx ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | basendxnn | ⊢ ( Base ‘ ndx ) ∈ ℕ | |
| 2 | 1 | nnrei | ⊢ ( Base ‘ ndx ) ∈ ℝ |
| 3 | basendxltedgfndx | ⊢ ( Base ‘ ndx ) < ( .ef ‘ ndx ) | |
| 4 | 2 3 | ltneii | ⊢ ( Base ‘ ndx ) ≠ ( .ef ‘ ndx ) |