Theorem rpgt0d 8776

Description: A positive real is greater than zero. (Contributed by Mario Carneiro, 28-May-2016.)

Hypothesis

Ref	Expression
rpred.1	|- ( ph -> A e. RR+ )

Assertion

Ref	Expression
rpgt0d	|- ( ph -> 0 < A )

Proof of Theorem rpgt0d

Step	Hyp	Ref	Expression
1		rpred.1	. 2 |- ( ph -> A e. RR+ )
2		rpgt0 8745	. 2 |- ( A e. RR+ -> 0 < A )
3	1, 2	syl 14	1 |- ( ph -> 0 < A )

Syntax hints:   -> wi 4   e. wcel 1433   class class class wbr 3785   0cc0 6981   < clt 7153   RR+crp 8734

This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 104  ax-ia2 105  ax-ia3 106  ax-io 662  ax-5 1376  ax-7 1377  ax-gen 1378  ax-ie1 1422  ax-ie2 1423  ax-8 1435  ax-10 1436  ax-11 1437  ax-i12 1438  ax-bndl 1439  ax-4 1440  ax-17 1459  ax-i9 1463  ax-ial 1467  ax-i5r 1468  ax-ext 2063

This theorem depends on definitions:  df-bi 115  df-3an 921  df-tru 1287  df-nf 1390  df-sb 1686  df-clab 2068  df-cleq 2074  df-clel 2077  df-nfc 2208  df-rab 2357  df-v 2603  df-un 2977  df-sn 3404  df-pr 3405  df-op 3407  df-br 3786  df-rp 8735

This theorem is referenced by:  rpregt0d  8780  ltmulgt11d  8809  ltmulgt12d  8810  gt0divd  8811  ge0divd  8812  lediv12ad  8833  expgt0  9509  nnesq  9592  bccl2  9695  resqrexlemp1rp  9892  resqrexlemover  9896  resqrexlemnm  9904  resqrexlemgt0  9906  resqrexlemglsq  9908  sqrtgt0d  10045  prmind2  10502  sqrt2irrlem  10540