Theorem ltrelpr 7836

Description: Positive real 'less than' is a relation on positive reals. (Contributed by NM, 14-Feb-1996.)

Assertion

Ref	Expression
ltrelpr	|- <P C_ ( P. X. P. )

Proof of Theorem ltrelpr

Dummy variables x q y are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		df-iltp 7801	. 2 |- <P = { <. x , y >. | ( ( x e. P. /\ y e. P. ) /\ E. q e. Q. ( q e. ( 2nd ` x ) /\ q e. ( 1st ` y ) ) ) }
2		opabssxp 4829	. 2 |- { <. x , y >. | ( ( x e. P. /\ y e. P. ) /\ E. q e. Q. ( q e. ( 2nd ` x ) /\ q e. ( 1st ` y ) ) ) } C_ ( P. X. P. )
3	1, 2	eqsstri 3274	1 |- <P C_ ( P. X. P. )

Syntax hints:   /\ wa 104   e. wcel 2205   E.wrex 2523   C_ wss 3214   {copab 4175   X. cxp 4752   ` cfv 5357   1stc1st 6345   2ndc2nd 6346   Q.cnq 7611   P.cnp 7622   <P cltp 7626

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-ext 2216

This theorem depends on definitions:  df-bi 117  df-nf 1510  df-sb 1812  df-clab 2221  df-cleq 2227  df-clel 2230  df-nfc 2375  df-in 3220  df-ss 3227  df-opab 4177  df-xp 4760  df-iltp 7801

This theorem is referenced by:  ltprordil  7920  ltexprlemm  7931  ltexprlemopl  7932  ltexprlemlol  7933  ltexprlemopu  7934  ltexprlemupu  7935  ltexprlemdisj  7937  ltexprlemloc  7938  ltexprlemfl  7940  ltexprlemrl  7941  ltexprlemfu  7942  ltexprlemru  7943  ltexpri  7944  lteupri  7948  ltaprlem  7949  prplnqu  7951  caucvgprprlemk  8014  caucvgprprlemnkltj  8020  caucvgprprlemnkeqj  8021  caucvgprprlemnjltk  8022  caucvgprprlemnbj  8024  caucvgprprlemml  8025  caucvgprprlemlol  8029  caucvgprprlemupu  8031  suplocexprlemss  8046  suplocexprlemlub  8055  gt0srpr  8079  lttrsr  8093  ltposr  8094  archsr  8113