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Definition df-ple 14040
Description: Define less-than-or-equal ordering extractor for posets and related structures. We use for the index to avoid conflict with through used for other purposes. (Contributed by NM, 4-Sep-2011.) (Revised by Mario Carneiro, 14-Aug-2015.)
Assertion
Ref Expression
df-ple

Detailed syntax breakdown of Definition df-ple
StepHypRef Expression
1 cple 14027 . 2
2 c10 10188 . . 3
32cslot 13959 . 2
41, 3wceq 1662 1
Colors of variables: wff set class
This definition is referenced by:  plendx  14112  pleid  14113  ressle  14118  0pos  14902  isposix  14905  oppgle  24736
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