Theorem rexri 8236

Description: A standard real is an extended real (inference form.) (Contributed by David Moews, 28-Feb-2017.)

Hypothesis

Ref	Expression
rexri.1	|- A e. RR

Assertion

Ref	Expression
rexri	|- A e. RR*

Proof of Theorem rexri

Step	Hyp	Ref	Expression
1		rexri.1	. 2 |- A e. RR
2		rexr 8224	. 2 |- ( A e. RR -> A e. RR* )
3	1, 2	ax-mp 5	1 |- A e. RR*

Syntax hints:   e. wcel 2202   RRcr 8030   RR*cxr 8212

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 716  ax-5 1495  ax-7 1496  ax-gen 1497  ax-ie1 1541  ax-ie2 1542  ax-8 1552  ax-10 1553  ax-11 1554  ax-i12 1555  ax-bndl 1557  ax-4 1558  ax-17 1574  ax-i9 1578  ax-ial 1582  ax-i5r 1583  ax-ext 2213

This theorem depends on definitions:  df-bi 117  df-tru 1400  df-nf 1509  df-sb 1811  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2363  df-v 2804  df-un 3204  df-in 3206  df-ss 3213  df-xr 8217

This theorem is referenced by:  1xr  8237  cos12dec  12328  halfleoddlt  12454  reeff1oleme  15495  reeff1o  15496  sin0pilem2  15505  neghalfpirx  15517  sincosq1sgn  15549  sincosq2sgn  15550  sincosq4sgn  15552  sinq12gt0  15553  cosq14gt0  15555  cosq23lt0  15556  coseq0q4123  15557  coseq00topi  15558  coseq0negpitopi  15559  cosordlem  15572  cosq34lt1  15573  cos02pilt1  15574  cos0pilt1  15575  ioocosf1o  15577  negpitopissre  15578  iooref1o  16638  taupi  16677