Metamath Proof Explorer


Theorem basendxnedgfndx

Description: The slots Base and .ef are different. (Contributed by AV, 21-Sep-2020)

Ref Expression
Assertion basendxnedgfndx ( Base ‘ ndx ) ≠ ( .ef ‘ ndx )

Proof

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 )