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| Mirrors > Home > ILE Home > Th. List > simp1l | GIF version | ||
| Description: Simplification of triple conjunction. (Contributed by NM, 9-Nov-2011.) |
| Ref | Expression |
|---|---|
| simp1l | ⊢ (((𝜑 ∧ 𝜓) ∧ 𝜒 ∧ 𝜃) → 𝜑) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | simpl 109 | . 2 ⊢ ((𝜑 ∧ 𝜓) → 𝜑) | |
| 2 | 1 | 3ad2ant1 1049 | 1 ⊢ (((𝜑 ∧ 𝜓) ∧ 𝜒 ∧ 𝜃) → 𝜑) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 104 ∧ w3a 1009 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 |
| This proof depends on definitions: df-bi 117 df-3an 1011 |
| This theorem is used by: simpl1l 1079 simpr1l 1085 simp11l 1139 simp21l 1145 simp31l 1151 en2lp 4701 tfisi 4734 funprg 5431 nnsucsssuc 6765 ecopovtrn 6906 ecopovtrng 6909 addassnqg 7749 distrnqg 7754 ltsonq 7765 ltanqg 7767 ltmnqg 7768 distrnq0 7826 addassnq0 7829 mulasssrg 8125 distrsrg 8126 lttrsr 8129 ltsosr 8131 ltasrg 8137 mulextsr1lem 8147 mulextsr1 8148 axmulass 8240 axdistr 8241 dmdcanap 9053 lt2msq1 9216 ltdiv2 9218 lediv2 9222 xaddass 10273 xaddass2 10274 xlt2add 10284 modqdi 10831 expaddzaplem 11021 expaddzap 11022 expmulzap 11024 swrdspsleq 11441 pfxeq 11470 ccatopth2 11491 pfxccat3 11508 resqrtcl 11797 bdtrilem 12007 bdtri 12008 xrbdtri 12044 bitsfzo 12724 prmexpb 12931 4sqlem18 13189 subgabl 14138 rng1zrlem 14260 opprringbg 14387 cnptoprest 15342 ssblps 15528 ssbl 15529 plyadd 15854 plymul 15855 rplogbchbase 16058 rplogbreexp 16061 relogbcxpbap 16073 lgssq 16171 uhgr2edg 16459 clwwlkccat 16654 |
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