Mathbox for Thierry Arnoux |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > Mathboxes > pr01ssre | Structured version Visualization version GIF version |
Description: The range of the indicator function is a subset of ℝ. (Contributed by Thierry Arnoux, 14-Aug-2017.) |
Ref | Expression |
---|---|
pr01ssre | ⊢ {0, 1} ⊆ ℝ |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 0re 10977 | . 2 ⊢ 0 ∈ ℝ | |
2 | 1re 10975 | . 2 ⊢ 1 ∈ ℝ | |
3 | prssi 4754 | . 2 ⊢ ((0 ∈ ℝ ∧ 1 ∈ ℝ) → {0, 1} ⊆ ℝ) | |
4 | 1, 2, 3 | mp2an 689 | 1 ⊢ {0, 1} ⊆ ℝ |
Colors of variables: wff setvar class |
Syntax hints: ∈ wcel 2106 ⊆ wss 3887 {cpr 4563 ℝcr 10870 0cc0 10871 1c1 10872 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-ext 2709 ax-1cn 10929 ax-icn 10930 ax-addcl 10931 ax-addrcl 10932 ax-mulcl 10933 ax-mulrcl 10934 ax-i2m1 10939 ax-1ne0 10940 ax-rnegex 10942 ax-rrecex 10943 ax-cnre 10944 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-sb 2068 df-clab 2716 df-cleq 2730 df-clel 2816 df-ne 2944 df-ral 3069 df-rex 3070 df-rab 3073 df-v 3434 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-nul 4257 df-if 4460 df-sn 4562 df-pr 4564 df-op 4568 df-uni 4840 df-br 5075 df-iota 6391 df-fv 6441 df-ov 7278 |
This theorem is referenced by: fprodex01 31139 indsum 31989 indsumin 31990 circlemethnat 32621 |
Copyright terms: Public domain | W3C validator |