Metamath Proof Explorer


Theorem basendxltplusgndx

Description: The index of the slot for the base set is less then the index of the slot for the group operation in an extensible structure. (Contributed by AV, 17-Oct-2024)

Ref Expression
Assertion basendxltplusgndx ( Base ‘ ndx ) < ( +g ‘ ndx )

Proof

Step Hyp Ref Expression
1 1lt2 1 < 2
2 basendx ( Base ‘ ndx ) = 1
3 plusgndx ( +g ‘ ndx ) = 2
4 1 2 3 3brtr4i ( Base ‘ ndx ) < ( +g ‘ ndx )