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Mirrors > Home > MPE Home > Th. List > Mathboxes > bj-tagci | Structured version Visualization version GIF version |
Description: Characterization of the elements of 𝐵 in terms of elements of its tagged version. (Contributed by BJ, 6-Oct-2018.) |
Ref | Expression |
---|---|
bj-tagci | ⊢ (𝐴 ∈ 𝐵 → {𝐴} ∈ tag 𝐵) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | bj-snglc 34284 | . 2 ⊢ (𝐴 ∈ 𝐵 ↔ {𝐴} ∈ sngl 𝐵) | |
2 | bj-sngltagi 34297 | . 2 ⊢ ({𝐴} ∈ sngl 𝐵 → {𝐴} ∈ tag 𝐵) | |
3 | 1, 2 | sylbi 219 | 1 ⊢ (𝐴 ∈ 𝐵 → {𝐴} ∈ tag 𝐵) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∈ wcel 2114 {csn 4567 sngl bj-csngl 34280 tag bj-ctag 34289 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2793 ax-sep 5203 ax-nul 5210 ax-pr 5330 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-rex 3144 df-v 3496 df-dif 3939 df-un 3941 df-in 3943 df-ss 3952 df-nul 4292 df-sn 4568 df-pr 4570 df-bj-sngl 34281 df-bj-tag 34290 |
This theorem is referenced by: (None) |
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