Symbolizing Negations: The sentences below illustrate common uses of the tilde. Be sure to check the help screen for important info about fill-in-the-blank symbolization exercises.
It's false that JANET dislikes jello; however, she would never WRESTLE in it.
~~J&~W
~(~J&~W)
~J&~W
It's not true that BATS cannot see, nevertheless, many of them are unATTRACTIVE.
~~B&~A
~(~B&~A)
~~B&~~A
~B&~A
Though they have no talent for SYMBOLIZATION, it's false that zombies cannot construct PROOFS.
~S&~~P
S&~P
~(S&~P)
~S&~P
If you have not WALKED in my shoes, you will not UNDERSTAND my choice of socks.
~W→~U
~(W→~U)
~(U→~W)
~U→~W
The party will not END so long as the beer still FLOWS and the neighbors do not COMPLAIN.
(F&~C)→~E
~((F&~C)→E)
~E→(F&~C)
~(E→(F&~C))
I do not LIKE you and I will not SPEAK to you; however, I would never EAT your jello nor TEASE your gerbils.
~L&~S&~E&~T
~L&~S&~(E&T)
~(L&S)&~E&~T
~(L&S)&~(E&T)
I'm going to Europe this WEEKEND, but I haven't time to visit both LONDON and PARIS.
W&~(L&P)
W&~L&~P
W→~(L&P)
W→(~L&~P)
A table cannot be both ROUND and SQUARE; moreover, it can be made of neither JELLO nor PUDDING.
~(R&S)&~J&~P
~R&~S&~J&~P
~R&~S&~(J&P)
~(R&S)&~(J&P)
It's false that she teachers both ART and LOGIC; however, it's true that she admires both CREATIVITY and RATIONALITY.
~(A&L)&C&R
~A&~L&C&R
~(A&L)→(C&R)
(~A&~L)→(C&R)
Supposing that God is all-GOOD, but not all-POWERFUL, then it's not impossible for Satan to TRIUMPH.
(G&~P)→~~T
G&(~P→~T)
~~T→(G&~P)
~(~T→(G&~P))
Given that you like RAMEN but not SPAGHETTIOS, I do not TRUST you and I suspect you are a COMMUNIST.
(R&~S)→(~T&C)
~(R&S)→~(T&C)
(~T&C)→(R&~S)
~(T&C)→~(R&S)
It's false that one can be HAPPY only when it does not RAIN.
~(H→~R)
~H→~R
~(~R→H)
~R→~H
It's not true that eating JELLO leads to LICENTIOUSNESS and DEBAUCHERY.
~(J→(L&D))
~J→(L&D)
J→~(L&D)
~(L&D)→J
It's not the case that we will have MALT liquor and PRETZELS only if BRENDA shows up.
~((M&P)→B)
~(M&P)→B
~(B→(M&P))
~B→(M&P)
It's false that TIGHTS and a CAPE are sufficient for being a SUPERHERO.
~((T&C)→S)
(T&C)→~S
~S→(T&C)
~(S→(T&C))
You should not EAT the jello unless it is JIGGLY.
~J→~E
~(J→~E)
~E→~J
~(E→~J)
Everything can be UNDERSTOOD unless the world is not RATIONAL.
~~R→U
~R→U
~U→R
U→~~R
We will SING and DANCE unless our NOSES fall off.
~N→(S&D)
~(N→(S&D))
~(S&D)→~N
~((S&D)→N)
Unless I am DREAMING, there is a TABLE before me and I am not a GOURD.
~D→(T&~G)
~(D→(T&~G))
~(T&~G)→~D
~((T&~G)→D)
Unless ZENO cannot be trusted, motion is imPOSSIBLE and change is not REAL.
~~Z→(~P&~R)
~~(Z→(~P&~R))
~(~P&~R)→Z
~((~P&~R)→~Z)
It's false that LIFE is not worth living unless there's JELLO.
~(~J→~L)
~~J→~L
~(~L→~J)
~~L→~J
Being IMAGINARY is not a sufficient condition for being a BASILISK.
~(I→B)
I→~B
~(B→I)
~B→I
Having a BEARD is not a sufficient condition for being a PHILOSOPHER, moreover, living in a CAVE is insufficient for being WISE.
~(B→P)&~(C→W)
(B→~P)&(C→~W)
(B→~P)&~(W→C)
~(P→B)&~(W→C)
Slaying DRAGONS is not essential for being a KNIGHT, and slaying PRINCESSES is not adequate for being a knight.
~(K→D)&~(P→K)
~(D→K)&~(K→P)
~(D→K)&~(P→K)
~(K→D)&~(K→P)
It's not necessary to destroy MEANING to discover TRUTH.
~(T→M)
(T→~M)
~M→T
~(M→T)
MUSIC and ART are not required for LIFE, but without CREATIVITY, advertising would be less PERSUASIVE.
~(L→(M&A))&(~C→P)
~((M&A)→L)&(~C→P)
(L→~(M&A))&~(C→P)
~((M&A)→L)&~(P→C)
Provided that you don't PROVOKE them, the bears will not ATTACK, unless they're HUNGRY.
~P→(~H→~A)
~(P&H)→~A
~P→(~A→H)
~(P&A)→H
It's not true that you will SUCCEED only if you're LUCKY and yet it's false that you won't succeed only if you're unlucky.
~(S→L)&~(~S→~L)
~(L→S)&~(~L→~S)
(~S→L)&(~~S→~L)
~((L→S)&(~L→~S))
If you don't have both a RACKET and a BALL, you cannot play TENNIS.
~(R&B)→~T
(~R&~B)→~T
If it doesn't have WINGS and FEATHERS then it's not a BIRD.
~(W&F)→~B
(~W&~F)→~B
If you don't have a COAT and GLOVES, then if there's not a HEATER nor a FIRE, you will SHIVER.
(~(C&G)→S)→(~H&~F)
~(C&G)→(S→(~H&~F))
(~(C&G)→(~H&~F))→S
~(C&G)→((~H&~F)→S)
It's false that if you understand MATH and PHYSICS you also understand ART, LOVE, JELLO and how to make a good grilled cheese SANDWICH.
~((M&P)→(A&L&J&S))
~(M&P)→(A&L&J&S)
(M&P)→~(A&L&J&S))
(~M&~P)→(A&L&J&S))
Being SQUARE is a sufficient condition for being unCOOL, but being PENTAGONAL is not a sufficient condition for being EVIL.
(S→~C)&~(P→E)
~(C→S)&~(E→P)
(S→~C)&(P→~E)
(~C→S)&~(E→P)
If there are no RAINBOWS, there will be no UNICORNS, unless the LEPRECHAUNS put horns on the ponies.
(~R→~L)→~U
(~L→~R)→~U
(~R→~U)→~L
~R→(~L→~U)
Supposing the creature is inVISIBLE, it cannot be SEEN unless it wears a HAT.
~V→(~H→~S)
(~V→~H)→~S
(~H→~V)→~S
~V→(~S→~H)
It's false that disBELIEF is unnecessary for disTRUST, nevertheless, JELLO makes me happy.