Theorem List for Intuitionistic Logic Explorer - 401-500 *Has distinct variable
group(s)
| Type | Label | Description |
| Statement |
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| Theorem | anidms 401 |
Inference from idempotent law for conjunction. (Contributed by NM,
15-Jun-1994.)
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| Theorem | anidmdbi 402 |
Conjunction idempotence with antecedent. (Contributed by Roy F. Longton,
8-Aug-2005.)
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| Theorem | anasss 403 |
Associative law for conjunction applied to antecedent (eliminates
syllogism). (Contributed by NM, 15-Nov-2002.)
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| Theorem | anassrs 404 |
Associative law for conjunction applied to antecedent (eliminates
syllogism). (Contributed by NM, 15-Nov-2002.)
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| Theorem | anass 405 |
Associative law for conjunction. Theorem *4.32 of [WhiteheadRussell]
p. 118. (Contributed by NM, 5-Aug-1993.) (Proof shortened by Wolf
Lammen, 24-Nov-2012.)
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| Theorem | sylanl1 406 |
A syllogism inference. (Contributed by NM, 10-Mar-2005.)
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| Theorem | sylanl2 407 |
A syllogism inference. (Contributed by NM, 1-Jan-2005.)
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| Theorem | sylanr1 408 |
A syllogism inference. (Contributed by NM, 9-Apr-2005.)
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| Theorem | sylanr2 409 |
A syllogism inference. (Contributed by NM, 9-Apr-2005.)
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| Theorem | sylani 410 |
A syllogism inference. (Contributed by NM, 2-May-1996.)
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| Theorem | sylan2i 411 |
A syllogism inference. (Contributed by NM, 1-Aug-1994.)
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| Theorem | syl2ani 412 |
A syllogism inference. (Contributed by NM, 3-Aug-1999.)
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| Theorem | sylan9 413 |
Nested syllogism inference conjoining dissimilar antecedents.
(Contributed by NM, 5-Aug-1993.) (Proof shortened by Andrew Salmon,
7-May-2011.)
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| Theorem | sylan9r 414 |
Nested syllogism inference conjoining dissimilar antecedents.
(Contributed by NM, 5-Aug-1993.)
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| Theorem | syl2anc 415 |
Syllogism inference combined with contraction. (Contributed by NM,
16-Mar-2012.)
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| Theorem | syl2anc2 416 |
Double syllogism inference combined with contraction. (Contributed by
BTernaryTau, 29-Sep-2023.)
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| Theorem | sylancl 417 |
Syllogism inference combined with modus ponens. (Contributed by Jeff
Madsen, 2-Sep-2009.)
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| Theorem | sylancr 418 |
Syllogism inference combined with modus ponens. (Contributed by Jeff
Madsen, 2-Sep-2009.)
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| Theorem | sylanblc 419 |
Syllogism inference combined with a biconditional. (Contributed by BJ,
25-Apr-2019.)
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| Theorem | sylanblrc 420 |
Syllogism inference combined with a biconditional. (Contributed by BJ,
25-Apr-2019.)
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| Theorem | sylanbrc 421 |
Syllogism inference. (Contributed by Jeff Madsen, 2-Sep-2009.)
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| Theorem | sylancb 422 |
A syllogism inference combined with contraction. (Contributed by NM,
3-Sep-2004.)
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| Theorem | sylancbr 423 |
A syllogism inference combined with contraction. (Contributed by NM,
3-Sep-2004.)
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| Theorem | sylancom 424 |
Syllogism inference with commutation of antecents. (Contributed by NM,
2-Jul-2008.)
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| Theorem | mpdan 425 |
An inference based on modus ponens. (Contributed by NM, 23-May-1999.)
(Proof shortened by Wolf Lammen, 22-Nov-2012.)
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| Theorem | mpancom 426 |
An inference based on modus ponens with commutation of antecedents.
(Contributed by NM, 28-Oct-2003.) (Proof shortened by Wolf Lammen,
7-Apr-2013.)
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| Theorem | mpidan 427 |
A deduction which "stacks" a hypothesis. (Contributed by Stanislas
Polu, 9-Mar-2020.) (Proof shortened by Wolf Lammen, 28-Mar-2021.)
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| Theorem | mpan 428 |
An inference based on modus ponens. (Contributed by NM, 30-Aug-1993.)
(Proof shortened by Wolf Lammen, 7-Apr-2013.)
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| Theorem | mpan2 429 |
An inference based on modus ponens. (Contributed by NM, 16-Sep-1993.)
(Proof shortened by Wolf Lammen, 19-Nov-2012.)
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| Theorem | mp2an 430 |
An inference based on modus ponens. (Contributed by NM,
13-Apr-1995.)
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| Theorem | mp4an 431 |
An inference based on modus ponens. (Contributed by Jeff Madsen,
15-Jun-2011.)
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| Theorem | mpan2d 432 |
A deduction based on modus ponens. (Contributed by NM, 12-Dec-2004.)
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| Theorem | mpand 433 |
A deduction based on modus ponens. (Contributed by NM, 12-Dec-2004.)
(Proof shortened by Wolf Lammen, 7-Apr-2013.)
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| Theorem | mpani 434 |
An inference based on modus ponens. (Contributed by NM, 10-Apr-1994.)
(Proof shortened by Wolf Lammen, 19-Nov-2012.)
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| Theorem | mpan2i 435 |
An inference based on modus ponens. (Contributed by NM, 10-Apr-1994.)
(Proof shortened by Wolf Lammen, 19-Nov-2012.)
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| Theorem | mp2ani 436 |
An inference based on modus ponens. (Contributed by NM,
12-Dec-2004.)
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| Theorem | mp2and 437 |
A deduction based on modus ponens. (Contributed by NM, 12-Dec-2004.)
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| Theorem | mpanl1 438 |
An inference based on modus ponens. (Contributed by NM, 16-Aug-1994.)
(Proof shortened by Wolf Lammen, 7-Apr-2013.)
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| Theorem | mpanl2 439 |
An inference based on modus ponens. (Contributed by NM, 16-Aug-1994.)
(Proof shortened by Andrew Salmon, 7-May-2011.)
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| Theorem | mpanl12 440 |
An inference based on modus ponens. (Contributed by NM,
13-Jul-2005.)
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| Theorem | mpanr1 441 |
An inference based on modus ponens. (Contributed by NM, 3-May-1994.)
(Proof shortened by Andrew Salmon, 7-May-2011.)
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| Theorem | mpanr2 442 |
An inference based on modus ponens. (Contributed by NM, 3-May-1994.)
(Proof shortened by Andrew Salmon, 7-May-2011.) (Proof shortened by
Wolf Lammen, 7-Apr-2013.)
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| Theorem | mpanr12 443 |
An inference based on modus ponens. (Contributed by NM,
24-Jul-2009.)
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| Theorem | mpanlr1 444 |
An inference based on modus ponens. (Contributed by NM, 30-Dec-2004.)
(Proof shortened by Wolf Lammen, 7-Apr-2013.)
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| Theorem | mpbirand 445 |
Detach truth from conjunction in biconditional. (Contributed by Glauco
Siliprandi, 3-Mar-2021.)
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| Theorem | mpbiran2d 446 |
Detach truth from conjunction in biconditional. Deduction form.
(Contributed by Peter Mazsa, 24-Sep-2022.)
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| Theorem | pm5.74da 447 |
Distribution of implication over biconditional (deduction form).
(Contributed by NM, 4-May-2007.)
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| Theorem | imdistan 448 |
Distribution of implication with conjunction. (Contributed by NM,
31-May-1999.) (Proof shortened by Wolf Lammen, 6-Dec-2012.)
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| Theorem | imdistani 449 |
Distribution of implication with conjunction. (Contributed by NM,
1-Aug-1994.)
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| Theorem | imdistanri 450 |
Distribution of implication with conjunction. (Contributed by NM,
8-Jan-2002.)
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| Theorem | imdistand 451 |
Distribution of implication with conjunction (deduction form).
(Contributed by NM, 27-Aug-2004.)
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| Theorem | imdistanda 452 |
Distribution of implication with conjunction (deduction version with
conjoined antecedent). (Contributed by Jeff Madsen, 19-Jun-2011.)
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| Theorem | syldanl 453 |
A syllogism deduction with conjoined antecedents. (Contributed by Jeff
Madsen, 20-Jun-2011.)
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| Theorem | pm5.32d 454 |
Distribution of implication over biconditional (deduction form).
(Contributed by NM, 29-Oct-1996.) (Revised by NM, 31-Jan-2015.)
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| Theorem | pm5.32rd 455 |
Distribution of implication over biconditional (deduction form).
(Contributed by NM, 25-Dec-2004.)
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| Theorem | pm5.32da 456 |
Distribution of implication over biconditional (deduction form).
(Contributed by NM, 9-Dec-2006.)
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| Theorem | pm5.32 457 |
Distribution of implication over biconditional. Theorem *5.32 of
[WhiteheadRussell] p. 125.
(Contributed by NM, 1-Aug-1994.) (Revised by
NM, 31-Jan-2015.)
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| Theorem | pm5.32i 458 |
Distribution of implication over biconditional (inference form).
(Contributed by NM, 1-Aug-1994.)
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| Theorem | pm5.32ri 459 |
Distribution of implication over biconditional (inference form).
(Contributed by NM, 12-Mar-1995.)
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| Theorem | biadan2 460 |
Add a conjunction to an equivalence. (Contributed by Jeff Madsen,
20-Jun-2011.)
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| Theorem | anbi2i 461 |
Introduce a left conjunct to both sides of a logical equivalence.
(Contributed by NM, 5-Aug-1993.) (Proof shortened by Wolf Lammen,
16-Nov-2013.)
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| Theorem | anbi1i 462 |
Introduce a right conjunct to both sides of a logical equivalence.
(Contributed by NM, 5-Aug-1993.) (Proof shortened by Wolf Lammen,
16-Nov-2013.)
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| Theorem | anbi2ci 463 |
Variant of anbi2i 461 with commutation. (Contributed by Jonathan
Ben-Naim, 3-Jun-2011.) (Proof shortened by Andrew Salmon,
14-Jun-2011.)
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| Theorem | anbi12i 464 |
Conjoin both sides of two equivalences. (Contributed by NM,
5-Aug-1993.)
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| Theorem | anbi12ci 465 |
Variant of anbi12i 464 with commutation. (Contributed by Jonathan
Ben-Naim, 3-Jun-2011.)
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| Theorem | sylan9bb 466 |
Nested syllogism inference conjoining dissimilar antecedents.
(Contributed by NM, 4-Mar-1995.)
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| Theorem | sylan9bbr 467 |
Nested syllogism inference conjoining dissimilar antecedents.
(Contributed by NM, 4-Mar-1995.)
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| Theorem | anbi2d 468 |
Deduction adding a left conjunct to both sides of a logical equivalence.
(Contributed by NM, 5-Aug-1993.) (Proof shortened by Wolf Lammen,
16-Nov-2013.)
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| Theorem | anbi1d 469 |
Deduction adding a right conjunct to both sides of a logical
equivalence. (Contributed by NM, 5-Aug-1993.) (Proof shortened by Wolf
Lammen, 16-Nov-2013.)
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| Theorem | anbi1 470 |
Introduce a right conjunct to both sides of a logical equivalence.
Theorem *4.36 of [WhiteheadRussell] p. 118. (Contributed
by NM,
3-Jan-2005.)
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| Theorem | anbi2 471 |
Introduce a left conjunct to both sides of a logical equivalence.
(Contributed by NM, 16-Nov-2013.)
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| Theorem | anbi1cd 472 |
Introduce a proposition as left conjunct on the left-hand side and right
conjunct on the right-hand side of an equivalence. Deduction form.
(Contributed by Peter Mazsa, 22-May-2021.)
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| Theorem | bianass 473 |
An inference to merge two lists of conjuncts. (Contributed by Giovanni
Mascellani, 23-May-2019.)
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| Theorem | bianassc 474 |
An inference to merge two lists of conjuncts. (Contributed by Peter
Mazsa, 24-Sep-2022.)
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| Theorem | an21 475 |
Swap two conjuncts. (Contributed by Peter Mazsa, 18-Sep-2022.)
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| Theorem | bitr 476 |
Theorem *4.22 of [WhiteheadRussell] p.
117. (Contributed by NM,
3-Jan-2005.)
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| Theorem | anbi12d 477 |
Deduction joining two equivalences to form equivalence of conjunctions.
(Contributed by NM, 5-Aug-1993.)
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| Theorem | mpan10 478 |
Modus ponens mixed with several conjunctions. (Contributed by Jim
Kingdon, 7-Jan-2018.)
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| Theorem | pm5.3 479 |
Theorem *5.3 of [WhiteheadRussell] p.
125. (Contributed by NM,
3-Jan-2005.) (Proof shortened by Andrew Salmon, 7-May-2011.)
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| Theorem | adantll 480 |
Deduction adding a conjunct to antecedent. (Contributed by NM,
4-May-1994.) (Proof shortened by Wolf Lammen, 24-Nov-2012.)
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| Theorem | adantlr 481 |
Deduction adding a conjunct to antecedent. (Contributed by NM,
4-May-1994.) (Proof shortened by Wolf Lammen, 24-Nov-2012.)
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| Theorem | adantrl 482 |
Deduction adding a conjunct to antecedent. (Contributed by NM,
4-May-1994.) (Proof shortened by Wolf Lammen, 24-Nov-2012.)
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| Theorem | adantrr 483 |
Deduction adding a conjunct to antecedent. (Contributed by NM,
4-May-1994.) (Proof shortened by Wolf Lammen, 24-Nov-2012.)
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| Theorem | adantlll 484 |
Deduction adding a conjunct to antecedent. (Contributed by NM,
26-Dec-2004.) (Proof shortened by Wolf Lammen, 2-Dec-2012.)
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| Theorem | adantllr 485 |
Deduction adding a conjunct to antecedent. (Contributed by NM,
26-Dec-2004.) (Proof shortened by Wolf Lammen, 4-Dec-2012.)
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| Theorem | adantlrl 486 |
Deduction adding a conjunct to antecedent. (Contributed by NM,
26-Dec-2004.) (Proof shortened by Wolf Lammen, 4-Dec-2012.)
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| Theorem | adantlrr 487 |
Deduction adding a conjunct to antecedent. (Contributed by NM,
26-Dec-2004.) (Proof shortened by Wolf Lammen, 4-Dec-2012.)
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| Theorem | adantrll 488 |
Deduction adding a conjunct to antecedent. (Contributed by NM,
26-Dec-2004.) (Proof shortened by Wolf Lammen, 4-Dec-2012.)
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| Theorem | adantrlr 489 |
Deduction adding a conjunct to antecedent. (Contributed by NM,
26-Dec-2004.) (Proof shortened by Wolf Lammen, 4-Dec-2012.)
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| Theorem | adantrrl 490 |
Deduction adding a conjunct to antecedent. (Contributed by NM,
26-Dec-2004.) (Proof shortened by Wolf Lammen, 4-Dec-2012.)
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| Theorem | adantrrr 491 |
Deduction adding a conjunct to antecedent. (Contributed by NM,
26-Dec-2004.) (Proof shortened by Wolf Lammen, 4-Dec-2012.)
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| Theorem | ad2antrr 492 |
Deduction adding two conjuncts to antecedent. (Contributed by NM,
19-Oct-1999.) (Proof shortened by Wolf Lammen, 20-Nov-2012.)
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| Theorem | ad2antlr 493 |
Deduction adding two conjuncts to antecedent. (Contributed by NM,
19-Oct-1999.) (Proof shortened by Wolf Lammen, 20-Nov-2012.)
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| Theorem | ad2antrl 494 |
Deduction adding two conjuncts to antecedent. (Contributed by NM,
19-Oct-1999.)
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| Theorem | ad2antll 495 |
Deduction adding conjuncts to antecedent. (Contributed by NM,
19-Oct-1999.)
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| Theorem | ad3antrrr 496 |
Deduction adding three conjuncts to antecedent. (Contributed by NM,
28-Jul-2012.)
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| Theorem | ad3antlr 497 |
Deduction adding three conjuncts to antecedent. (Contributed by Mario
Carneiro, 5-Jan-2017.)
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| Theorem | ad4antr 498 |
Deduction adding 4 conjuncts to antecedent. (Contributed by Mario
Carneiro, 4-Jan-2017.)
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| Theorem | ad4antlr 499 |
Deduction adding 4 conjuncts to antecedent. (Contributed by Mario
Carneiro, 5-Jan-2017.)
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| Theorem | ad5antr 500 |
Deduction adding 5 conjuncts to antecedent. (Contributed by Mario
Carneiro, 4-Jan-2017.)
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