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| Mirrors > Home > MPE Home > Th. List > cofcutrtime2d | Structured version Visualization version GIF version | ||
| Description: If 𝑋 is a timely cut of 𝐴 and 𝐵, then ( R ‘𝑋) is coinitial with 𝐵. (Contributed by Scott Fenton, 23-Jan-2025.) |
| Ref | Expression |
|---|---|
| cofcutrtimed.1 | ⊢ (𝜑 → (𝐴 ∪ 𝐵) ⊆ ( O ‘( bday ‘𝑋))) |
| cofcutrtimed.2 | ⊢ (𝜑 → 𝐴 <<s 𝐵) |
| cofcutrtimed.3 | ⊢ (𝜑 → 𝑋 = (𝐴 |s 𝐵)) |
| Ref | Expression |
|---|---|
| cofcutrtime2d | ⊢ (𝜑 → ∀𝑧 ∈ 𝐵 ∃𝑤 ∈ ( R ‘𝑋)𝑤 ≤s 𝑧) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cofcutrtimed.1 | . . 3 ⊢ (𝜑 → (𝐴 ∪ 𝐵) ⊆ ( O ‘( bday ‘𝑋))) | |
| 2 | cofcutrtimed.2 | . . 3 ⊢ (𝜑 → 𝐴 <<s 𝐵) | |
| 3 | cofcutrtimed.3 | . . 3 ⊢ (𝜑 → 𝑋 = (𝐴 |s 𝐵)) | |
| 4 | cofcutrtime 28020 | . . 3 ⊢ (((𝐴 ∪ 𝐵) ⊆ ( O ‘( bday ‘𝑋)) ∧ 𝐴 <<s 𝐵 ∧ 𝑋 = (𝐴 |s 𝐵)) → (∀𝑥 ∈ 𝐴 ∃𝑦 ∈ ( L ‘𝑋)𝑥 ≤s 𝑦 ∧ ∀𝑧 ∈ 𝐵 ∃𝑤 ∈ ( R ‘𝑋)𝑤 ≤s 𝑧)) | |
| 5 | 1, 2, 3, 4 | syl3anc 1390 | . 2 ⊢ (𝜑 → (∀𝑥 ∈ 𝐴 ∃𝑦 ∈ ( L ‘𝑋)𝑥 ≤s 𝑦 ∧ ∀𝑧 ∈ 𝐵 ∃𝑤 ∈ ( R ‘𝑋)𝑤 ≤s 𝑧)) |
| 6 | 5 | simprd 499 | 1 ⊢ (𝜑 → ∀𝑧 ∈ 𝐵 ∃𝑤 ∈ ( R ‘𝑋)𝑤 ≤s 𝑧) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 399 = wceq 1560 ∀wral 3076 ∃wrex 3086 ∪ cun 3902 ⊆ wss 3904 class class class wbr 5100 ‘cfv 6521 (class class class)co 7396 bday cbday 27706 ≤s cles 27808 <<s cslts 27850 |s ccuts 27852 O cold 27916 L cleft 27918 R cright 27919 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1815 ax-4 1829 ax-5 1930 ax-6 1987 ax-7 2028 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-rep 5227 ax-sep 5246 ax-nul 5256 ax-pow 5322 ax-pr 5390 ax-un 7718 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1099 df-3an 1100 df-tru 1563 df-fal 1573 df-ex 1800 df-nf 1804 df-sb 2091 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-ral 3077 df-rex 3087 df-rmo 3367 df-reu 3368 df-rab 3415 df-v 3456 df-sbc 3745 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-pss 3924 df-nul 4286 df-if 4481 df-pw 4557 df-sn 4583 df-pr 4585 df-tp 4587 df-op 4589 df-uni 4866 df-int 4906 df-iun 4951 df-br 5101 df-opab 5163 df-mpt 5182 df-tr 5208 df-id 5542 df-eprel 5547 df-po 5555 df-so 5556 df-fr 5600 df-we 5602 df-xp 5653 df-rel 5654 df-cnv 5655 df-co 5656 df-dm 5657 df-rn 5658 df-res 5659 df-ima 5660 df-pred 6288 df-ord 6349 df-on 6350 df-suc 6352 df-iota 6477 df-fun 6523 df-fn 6524 df-f 6525 df-f1 6526 df-fo 6527 df-f1o 6528 df-fv 6529 df-riota 7353 df-ov 7399 df-oprab 7400 df-mpo 7401 df-2nd 7971 df-frecs 8262 df-wrecs 8293 df-recs 8342 df-1o 8437 df-2o 8438 df-no 27707 df-lts 27708 df-bday 27709 df-les 27809 df-slts 27851 df-cuts 27853 df-made 27920 df-old 27921 df-left 27923 df-right 27924 |
| This theorem is referenced by: (None) |
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