Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > ILE Home > Th. List > 0ltpnf | GIF version |
Description: Zero is less than plus infinity (common case). (Contributed by David A. Wheeler, 8-Dec-2018.) |
Ref | Expression |
---|---|
0ltpnf | ⊢ 0 < +∞ |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 0re 7932 | . 2 ⊢ 0 ∈ ℝ | |
2 | ltpnf 9751 | . 2 ⊢ (0 ∈ ℝ → 0 < +∞) | |
3 | 1, 2 | ax-mp 5 | 1 ⊢ 0 < +∞ |
Colors of variables: wff set class |
Syntax hints: ∈ wcel 2146 class class class wbr 3998 ℝcr 7785 0cc0 7786 +∞cpnf 7963 < clt 7966 |
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 709 ax-5 1445 ax-7 1446 ax-gen 1447 ax-ie1 1491 ax-ie2 1492 ax-8 1502 ax-10 1503 ax-11 1504 ax-i12 1505 ax-bndl 1507 ax-4 1508 ax-17 1524 ax-i9 1528 ax-ial 1532 ax-i5r 1533 ax-13 2148 ax-14 2149 ax-ext 2157 ax-sep 4116 ax-pow 4169 ax-pr 4203 ax-un 4427 ax-cnex 7877 ax-1re 7880 ax-addrcl 7883 ax-rnegex 7895 |
This theorem depends on definitions: df-bi 117 df-3an 980 df-tru 1356 df-nf 1459 df-sb 1761 df-eu 2027 df-mo 2028 df-clab 2162 df-cleq 2168 df-clel 2171 df-nfc 2306 df-ral 2458 df-rex 2459 df-v 2737 df-un 3131 df-in 3133 df-ss 3140 df-pw 3574 df-sn 3595 df-pr 3596 df-op 3598 df-uni 3806 df-br 3999 df-opab 4060 df-xp 4626 df-pnf 7968 df-xr 7970 df-ltxr 7971 |
This theorem is referenced by: xposdif 9853 |
Copyright terms: Public domain | W3C validator |