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  • By Pirenz in The Spiked Math IQ Test: Someone is a bit critical about grammar. In which case, I should mention that there are 4 types of sentences. The sentence shown is an interrogative sentence (also known as a question). On the other hand, what you were thinking of is a declarative sentence (also known as a statement). Hence their answer is correct since they said "sentence" and not "statement" (or at least under their assumption that they're talking about Euler's number and not the letter "e") read in context
  • By Charles Tao in The Perfect Score: 00.0bar would make a worser grade read in context
  • By Charles Tao in Summer Break: It is 4.7 again read in context
  • By Charles Tao in lolcatenary: no, i think it was intentional read in context
  • By Charles Tao in The Math Genie: I wish for one dollar this instant... two dollars the second instant... all the way to infinity dollars the final instant! GENIE: Ok. GENIE gives me -1/12 dollars instead of infinite money Who are you? Genie: I am ramanujan's ghost read in context
  • By Chikorita in Hexadecimal Grading: And it is actually impossible to get a 14/15 ( or any other fraction ) because E is not a letter grade. read in context
  • By Heathcliff Ng in Three logicians walk into a bar: What's up? read in context
  • By vedant in Simpson's Rule: Thank you so much for this read in context
  • By lemmings of time in Sequences: Crud, sorry. I didn't realize it worked the first time. Also, first time commenting! :-) (well, third now, I suppose) read in context
  • By lemmings of time in Sequences: I think it's 18. Alternate adding previous 2 and previous 3. 1,1,2,3,6,9.... 0+1+1=2 1+2=3 1+2+3=6 3+6=9 3+6+9=18 read in context
  • By lemmings of time in Sequences: I think it's 18. Alternate adding previous 2 and previous 3. 1,1,2,3,6,9.... 0+1+1=2 1+2=3 1+2+3=6 3+6=9 3+6+9=18 read in context
  • By GingerKitty in I hate math: Hey, I remember you taught math 265 at uofc; I was in your class! Good times...I've made it to real analysis and hearing anyone say first year math is hard makes me want to cry. read in context
  • By Joe in A course on recursion: Might need to put (updated epsilon >= 0 times per month) though read in context
  • By jonny in The Math Genie: thats ok, just as we now can brute force any np problem in polynomial time: let P be in NP, then there is a verification program v(instance, solution)->yes/no running in polynomial p_v(len(instance)) steps. also, if NP = P there is an unknown program s(instance) -> solution running in polynomial p_s(len(instance)) steps. all programs are sequences of letters and can be enumerated. let p(i) the i'th program. a process (program in execution) is described by strings (program, memory, output) "step(program, memory) -> memory, output_byte?" runs one step in of a program, returning the new memory string and maybe a byte of output. solution program: memories = [] # initially empty list of program memories outputs = [] # initially empty list of program outputs i = 0 while True: # start new "thread" memories[i], outputs[i] for p(i) memories[i] = "" # initially empty memory for program p(i) outputs[i] = "" # initially empty output for j in [0 ... i]: m, o = step(p(j), memories[j]) memories[j] = m outputs[j].append(o) # verify if problem is solved: if v(instance, outputs[j]): output outputs[j] terminate i = i + 1 There is a polynomial f, so that this program finds an answer to instance in f(len(instance)) steps: the run time is something with p_v(len(solution)) * (index of solver s + p_s(len(instance))) ** 2. just a square and a constant factor of overhead :) read in context
  • By Trebor in Keeping students busy: It's similar to computing the Taylor series of e^(-1/x^2) at x=0, students get confused when they get a polynomial that vanishes identically XD read in context
  • By Dr. What in Keeping students busy: Of course, because you are not supposed to do it that way. read in context
  • By Michael Watts in Keeping students busy: Unless I've made a horrible mistake somewhere, it's possible to show this limit is 0 using just one application of L'Hopital's rule. read in context
  • By Melcalc in Pushing limits: Poor jock 47.. at least he's trying! read in context
  • By Dr. What in Pushing limits: Well, it does work if you push it for some distance, since work=force*distance. read in context
  • By Melcalc in Mobius the Dog: Love the new comics! read in context
  • By Maria C. Padin in A course on recursion: Sooo happy to see you!! read in context
  • By Spiked Math in A course on recursion: Not yet! read in context
  • By Melcalc in What is the limit: Wunderbar! Good to see you back. read in context
  • By Dr. what in What is the limit: Hover over the Ψ sign and you will see the answer. read in context
  • By Trebor in What is the limit: Great work(s) Mike! I've been wandering around this site for months. I pulled s and y to the left first so I didn't get it at first :) read in context
  • By Josh in What is the limit: Sky's the limit read in context
  • By Fran89 in What is the limit: ksy? ysk? I don't get it. read in context
  • By Moi in What is the limit: Darned, thought 's' was a function. As often with limits, the result is Notorious(ly) B.I.G. read in context
  • By Daniel in A course on recursion: New post. Am I dreaming? read in context
  • By Tyler in A course on recursion: Spiked math is not dead! read in context
  • By fireflame241 in Classroom Anatomy: Umm... I think there are three people sleeping. Unless one is practicing TeX with z^{z^z} read in context
  • By Thu2016 in Cancelling: no read in context
  • By Christo Keller in Three logicians walk into a bar: "Do the three logicians within 10 meters of me..." read in context
  • By in A Self-complementary Graph: Removing nonexistent or hidden cookies... OK Removing too sweet/sugary/bad/chipped cookies... OK Removing art cookies except for 85... OK Removing simple cookies... OK Removing negative numbered cookies... OK Removing cookies rated 0 0 0 0... OK Removing cookies with bad requests... OK Recalculating cookies... 15.000.000. read in context
  • By in The Movie Math Quiz Part 3: 1 would be Manhattg. Tangent is tg, NOT tan! read in context
  • By in The Movie Math Quiz Part 2: 1. Snakes on a Plane. 2. Independence day. 3. Single White Female. 4. Blades of Glory. 5. 8 Miles. 6. Transformers. 7. Field of Dreams. 8. Alpha and Omega. 9. 13th floor. 10. Sum of all fears (I think) read in context
  • By in World of Mathcraft: I accept. *solves Riemann hypothesis within zeta(s)/10^TREE(3) 10^-googolplex second units* read in context
  • By in The NeverEnding Story: It's a fract'al-ion (fractal fraction), meaning the fraction is self-similar. read in context
  • By in Vectorized: ...Let you be a vector... NOT WRONG!!! read in context
  • By in Your Mom Theorems: No. It's ∞. read in context
  • By IHateMyLife in The Joke Book: WTF is this website, please close this website because so many people have lost their lives to the cringy jokes thx bye. read in context
  • By in The IQ Test: Billy dösn't know sequences. read in context
  • By in The IQ Test: 10, 11 and 12 are solutions. Now Your Mom. read in context
  • By in The IQ Test: Not YM. It's 10, 11 AND 12. read in context
  • By in Simple Area Quiz: Always the lower one. read in context
  • By in A Self-complementary Graph: What speed is absurdly relativistic? The speed of eπc. Why? Because it's ~2400000 km/s!!! read in context
  • By in Why Mathematicians Never Win At Poker: I love manifolds. A msths lover never wins at poker, but would always win if and only if it'd be maths. read in context
  • By in Alex Was Having Second Thoughts: Mustn't he be tg^2 x? read in context
  • By in A Self-complementary Graph: It's eπππππππππππππππππππππππππππππππππππππππππππππππππππππππππππππππc!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!π!π!ππππ!!!!!!!!!!!! read in context