Derek Orr

@Derektionary

Pitt math PhD stud(ent) • Math/Phys Tutor • OEIS editor • Author • 90% RTs. Published. Erdős number 4. I'm just having fun with it

Pittsburgh, PA
Vrijeme pridruživanja: travanj 2013.

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  1. Prikvačeni tweet
    31. pro 2019.

    Happy New Year! Here's some 2020 math. Start the countdown! 10*(9+8*7*6-5!-4!+3-2*1) = 2020 (10*9+8!/(7*6)-5*4!/3)*2*1 = 2020 10*(9+8)*7+6!+5!-4*3+2*1 = 2020 (10+9)*(8+7+6)*5+4!+3-2*1 = 2020 (10-9*8+7-6+5+4^(3!))/2*1 = 2020 10*(9+8*7-6+5!+4!)-3^2-1 = 2020

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  2. proslijedio/la je Tweet

    Red in front or blue in front

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  3. proslijedio/la je Tweet
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  4. proslijedio/la je Tweet

    me: life is like the function sin(t) it has its ups and downs friend: wow thats beautiful thank you me: except life is restricted to a certain time interval friend: me: because you die

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  5. proslijedio/la je Tweet
    4. velj

    If p and q are distinct primes, every abelian group of order pq is isomorphic to the integers mod pq.

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  6. proslijedio/la je Tweet
    prije 18 sati

    Let the knockout rounds begin! I must admit when I realised that my beloved level 42 had drawn U2, the temptation was there to pick up my ball and leave! But I wouldn't do that to you :-) Draw and music videos attached. Enjoy!

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  7. proslijedio/la je Tweet

    Quick quesh: How many laws were in place designed to prevent people from watching all or part of Super Bowl LIV?

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  8. proslijedio/la je Tweet
    3. velj

    god: [creates australia] angel: u gave them literally all of the scary animals god: yes but they will love them angel: how god: [creating steve irwin] trust me

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  9. proslijedio/la je Tweet
    3. velj

    I gripe a lot about bad design on here, and sometimes give examples of Bad, but for once, I can show you literally the best design I have ever seen

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    3. velj

    “look at god” “bitch i just got some bundles”😭😭😭

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    4. velj

    look at the snout on this thing. an absolute scallywag

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  12. proslijedio/la je Tweet
    4. velj

    If a linear ODE has complex eigenvalues, solutions oscillate. If real parts are negative, oscillations decay exponentially.

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  13. proslijedio/la je Tweet
    4. velj

    The smallest prime > 11 whose digits are all 1s is 1,111,111,111,111,111,111.

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  14. proslijedio/la je Tweet
    4. velj

    Initial conditions: Pendulum 1: position: (3.83, 1.34), mass: 2.45 Pendulum 2: position: (1.35, -0.35), mass: 4.51

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  15. proslijedio/la je Tweet
    4. velj

    Round 2, Group J in our Bands/Singers Olympiad Top 2 go through to the knockout stages RT if you can. (Updated draw attached to this thread)

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  16. proslijedio/la je Tweet
    4. velj

    THE FATE OF THIS NATION IS IN THE HANDS OF SOME RANDOM KAREN DOING A COIN TOSS THE ABSOLUTE STATE OF DEMOCRACY

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  17. proslijedio/la je Tweet
    4. velj

    The derivative of an odd function is an even function.

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  18. proslijedio/la je Tweet
    4. velj

    “let’s not get political” bitch I will ruin this family gathering rn

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  19. proslijedio/la je Tweet

    happy birthday. there's a fucking gun to my head. no time to get smug.

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  20. proslijedio/la je Tweet
    4. velj

    Billie Eilish thinks a lot of hip-hop right now is lying about guns and women: "It’s like, ‘I got my AK-47, and I’m f**kin’,’ and I’m like, what? You don’t have a gun. ‘And all my bitches…’ I’m like, which bitches?"

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  21. proslijedio/la je Tweet
    4. velj

    B911 POLL: After seeing today's partial results, who do you think wins the Democratic primary & will ultimately face President Trump?

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