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Oct 25, 2021 at 3:47 answer added Jorge Zuniga timeline score: 3
Oct 25, 2021 at 1:40 answer added Todd Trimble timeline score: 3
Dec 21, 2020 at 23:36 answer added Matthieu Latapy timeline score: 5
Dec 17, 2020 at 3:06 review Close votes
Dec 18, 2020 at 4:47
Dec 14, 2020 at 8:28 comment added Fabian Blechschmidt I love youtube.com/user/standupmaths and Matt Parker wrote a bunch of books about math problems, misunderstandings and failures.
Dec 14, 2020 at 7:21 answer added C.F.G timeline score: 2
Dec 14, 2020 at 2:14 answer added Keith McClary timeline score: 7
Dec 14, 2020 at 1:18 answer added Joe Silverman timeline score: 18
Dec 14, 2020 at 1:04 answer added Chris Leary timeline score: 12
Dec 13, 2020 at 20:42 answer added Narasimham timeline score: 2
Dec 13, 2020 at 18:11 comment added Uwe Ziegenhagen I do not have enough points to provide a real answer, but how about a Paul Erdos biography: amazon.de/Man-Who-Loved-Only-Numbers/dp/0786884061
Dec 13, 2020 at 15:36 answer added efs timeline score: 9
Dec 13, 2020 at 14:18 answer added Dominic van der Zypen timeline score: 8
Dec 13, 2020 at 12:53 comment added Sean Kearon I don't have enough reputation to add an answer, but The Mathematical Expericence was a book I very much enjoyed when I was an undergraduate.
Dec 13, 2020 at 12:22 comment added Mozibur Ullah @user21820: I'd be happy with a square-1 puzzle for a present. It looks cool!
Dec 13, 2020 at 10:42 answer added Dirk timeline score: 16
Dec 13, 2020 at 3:54 answer added none timeline score: 6
Dec 13, 2020 at 2:27 answer added AndreyF timeline score: 1
Dec 13, 2020 at 0:48 answer added qwr timeline score: 2
Dec 12, 2020 at 23:18 comment added bof I was going to answer your title question with "cash" but I guess that's not appropriate seeing as it's for your dad.
Dec 12, 2020 at 22:54 comment added user147650 Am I allowed to go against the grain and suggest not getting your dad a math-related gift? Maybe I am not "mathy" enough but I usually find such gifts a bit boring/easily forgotten (ok, I love the suggestion below about Hagaromo chalk!)
Dec 12, 2020 at 21:53 answer added Per Alexandersson timeline score: 16
Dec 12, 2020 at 21:53 history edited Shahrooz CC BY-SA 4.0
deleted 1 character in body
Dec 12, 2020 at 21:43 answer added KhashF timeline score: 4
Dec 12, 2020 at 21:38 answer added Igor Khavkine timeline score: 10
Dec 12, 2020 at 20:39 comment added bandybabboon My 101 score is not enough to answer here... GET A 3D PRINTER AND COPY SOME OF THESE TO 3D thingiverse.com/…
Dec 12, 2020 at 20:24 answer added user141903 timeline score: 9
S Dec 12, 2020 at 16:11 answer added Rita Geraghty timeline score: 17
S Dec 12, 2020 at 16:11 history protected CommunityBot
Dec 12, 2020 at 15:50 answer added Nikolas timeline score: 5
Dec 12, 2020 at 15:11 answer added Lysistrata timeline score: 7
Dec 12, 2020 at 15:02 comment added user21820 @user347489: Incidentally, mathematicians who know how to derive the solution for a Rubik's cube typically also can solve most common permutation puzzles, so those who are like me would consider all those puzzles as nothing new. But the Square-1 puzzle is a more sneaky type.
Dec 12, 2020 at 14:40 review Close votes
Dec 13, 2020 at 21:25
Dec 12, 2020 at 14:05 answer added CaptainCodeman timeline score: 5
Dec 12, 2020 at 12:54 comment added Gordon Royle Are you sure that Dad is not an MO regular?
Dec 12, 2020 at 11:15 answer added Firmin Martin timeline score: 6
Dec 12, 2020 at 10:52 comment added A_S You can buy a "Hilbert Hat"! ((:
Dec 12, 2020 at 9:37 comment added Asaf Karagila Bottle of really good whisky, a Japanese hand made carbon steel gyuto, a house. All great Christmas gifts from the point of view of this PhD in mathematics.
Dec 12, 2020 at 8:09 answer added David Lehavi timeline score: 11
Dec 12, 2020 at 7:22 comment added user347489 Expanding on the Rubik's cube idea: if you know your father enjoys solving the classic 3x3x3 cube, the smallest version of the dodecahedron puzzle only requires the same algorithms as the 3x3x3 cube, so it's really fun and it's a beautiful piece of work.
Dec 12, 2020 at 6:41 history became hot network question
Dec 12, 2020 at 6:31 answer added Gil Kalai timeline score: 15
Dec 12, 2020 at 6:20 answer added Gil Kalai timeline score: 25
Dec 12, 2020 at 5:28 answer added Anthony Quas timeline score: 23
Dec 12, 2020 at 2:23 answer added user1504 timeline score: 11
Dec 12, 2020 at 1:29 answer added Joseph O'Rourke timeline score: 15
Dec 12, 2020 at 1:21 comment added Deane Yang @PiotrHajlasz, amen.
Dec 12, 2020 at 1:09 history reopened François G. Dorais
Dec 12, 2020 at 1:09 history closed LSpice
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Dec 12, 2020 at 1:02 history made wiki Post Made Community Wiki by François G. Dorais
Dec 12, 2020 at 0:27 answer added Louis Deaett timeline score: 28
Dec 12, 2020 at 0:16 comment added Piotr Hajlasz Please, keep this question open. It is one of a very few holidays treats we can have in MathOverflow in the depressing time we have.
Dec 12, 2020 at 0:06 answer added Piotr Hajlasz timeline score: 17
Dec 11, 2020 at 23:53 answer added Pop timeline score: 15
Dec 11, 2020 at 23:35 comment added Deane Yang I was going to recommend this book, but alas it is sold out. fondationcartier.com/en/editions/…
Dec 11, 2020 at 23:33 answer added Deane Yang timeline score: 98
Dec 11, 2020 at 23:32 answer added user44143 timeline score: 15
Dec 11, 2020 at 23:30 comment added Michael Engelhardt Any sort of puzzle of the Rubik's cube type should be pretty good, where you have to assemble, disassemble, entangle, disentangle something or other.
Dec 11, 2020 at 23:20 answer added Gordon Royle timeline score: 41
Dec 11, 2020 at 23:11 comment added Gordon Royle This is entirely not the right website, but I’d like to see what answers you get anyway, so let’s hope the “vote-to-closers” are too busy closing homework questions and let this one survive at least for a while.
Dec 11, 2020 at 23:07 answer added Sam Hopkins timeline score: 40
Dec 11, 2020 at 23:05 review Close votes
Dec 12, 2020 at 1:17
Dec 11, 2020 at 23:02 comment added Malkoun I personally would love to have a Math book as a gift. But it is tricky, as your father probably has a good collection of books.
Dec 11, 2020 at 23:02 answer added J.J. Green timeline score: 84
Dec 11, 2020 at 22:47 comment added Alec Rhea This should obviously be CW, but I support this question existing in the hope that my future children will get me cool math gifts.
Dec 11, 2020 at 22:42 review First posts
Dec 11, 2020 at 23:36
Dec 11, 2020 at 22:39 history asked Antenor Briareo CC BY-SA 4.0