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Theorem xnn0xrnemnf 9210
Description: The extended nonnegative integers are extended reals without negative infinity. (Contributed by AV, 10-Dec-2020.)
Assertion
Ref Expression
xnn0xrnemnf  |-  ( A  e. NN0*  ->  ( A  e. 
RR*  /\  A  =/= -oo ) )

Proof of Theorem xnn0xrnemnf
StepHypRef Expression
1 xnn0xr 9203 . 2  |-  ( A  e. NN0*  ->  A  e.  RR* )
2 xnn0nemnf 9209 . 2  |-  ( A  e. NN0*  ->  A  =/= -oo )
31, 2jca 304 1  |-  ( A  e. NN0*  ->  ( A  e. 
RR*  /\  A  =/= -oo ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 103    e. wcel 2141    =/= wne 2340   -oocmnf 7952   RR*cxr 7953  NN0*cxnn0 9198
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-in1 609  ax-in2 610  ax-io 704  ax-5 1440  ax-7 1441  ax-gen 1442  ax-ie1 1486  ax-ie2 1487  ax-8 1497  ax-10 1498  ax-11 1499  ax-i12 1500  ax-bndl 1502  ax-4 1503  ax-17 1519  ax-i9 1523  ax-ial 1527  ax-i5r 1528  ax-13 2143  ax-14 2144  ax-ext 2152  ax-sep 4107  ax-pow 4160  ax-un 4418  ax-setind 4521  ax-cnex 7865  ax-resscn 7866  ax-1re 7868  ax-addrcl 7871  ax-rnegex 7883
This theorem depends on definitions:  df-bi 116  df-3an 975  df-tru 1351  df-fal 1354  df-nf 1454  df-sb 1756  df-clab 2157  df-cleq 2163  df-clel 2166  df-nfc 2301  df-ne 2341  df-nel 2436  df-ral 2453  df-rex 2454  df-rab 2457  df-v 2732  df-dif 3123  df-un 3125  df-in 3127  df-ss 3134  df-pw 3568  df-sn 3589  df-pr 3590  df-uni 3797  df-int 3832  df-pnf 7956  df-mnf 7957  df-xr 7958  df-inn 8879  df-n0 9136  df-xnn0 9199
This theorem is referenced by:  xnn0xadd0  9824  xnn0add4d  9843
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