The Maths Thread

[Spark]

https://www.quantamagazine.org/graduate-student-solves-decades-old-conway-knot-problem-20200519/

Shades of von Neumann in this story; graduate student casually mentions that they've solved famous and vexing problem in their spare time without realising it, to the general amazement of other academics and professors.

 

[dontcloseyoureyes]

Love that aussie started this thread. What a ****en madman.

 

[SillyCowCorner1]

https://www.quantamagazine.org/graduate-student-solves-decades-old-conway-knot-problem-20200519/

Shades of von Neumann in this story; graduate student casually mentions that they've solved famous and vexing problem in their spare time without realising it, to the general amazement of other academics and professors.

Just amazing what the mind can do. A step in the right direction.

 

[RossTaylorsBox]

 

[Spark]

but what if i do want the riemann surface of sqrt z apples

 

[RossTaylorsBox]

Then you've been played for an absolute fool.

 

[Spark]

gimme my apples

 

[vcs]

A mathematician decides he wants to learn more about practical problems. He sees a seminar with a nice title: "The Theory of Gears." So he goes. The speaker stands up and begins, "The theory of gears with a real number of teeth is well known ..."

The more apparently "useless" the Math is, all the better AFAIC. Anyway...

Watch that video and then tell me with a straight face that studying abstract Math is pointless..

 

[Howe_zat]

This man is a genius. Love him to bits.

 

[ankitj]

Semi circle folded over to touch the diameter at a point that splits the diameter into 4 and 2 units lengths. What is the length of the fold line?

 

[ankitj]

^ Anyone gave it a shot?

Hint: look at the folded arc as part of another circle. So you have 2 intersecting circles.

 

[harsh.ag]

sqrt26

 

[vcs]

 

[ankitj]

I am thinking of a positive integer N. I make 30 statements about the number:

1. N is divisible by 1
2. N is divisible by 2
3. N is divisible by 3
:
:
:
30. N is divisible by 30​

Exactly 2 of these 30 statements are false and those 2 are consecutive. Which statements are false?

 

[vcs]

16 and 17?

 

[vcs]

Anyone trying out the latest 3Blue1Brown problem?

Stopped it as soon as he gave the problem description because I wanted to work on it myself, but can't figure out any strategy that'll work beyond a trivial chessboard of 2 squares.

 

[Spark]

16 and 17?

yep.

 

[ankitj]

Anyone trying out the latest 3Blue1Brown problem?

Stopped it as soon as he gave the problem description because I wanted to work on it myself, but can't figure out any strategy that'll work beyond a trivial chessboard of 2 squares.

I put this on and closed my eyes last night to put myself to sleep.

16 and 17 is correct answer btw.

 

[vcs]

I put this on and closed my eyes last night to put myself to sleep.

16 and 17 is correct answer btw.

Give me a clue dammit

 

[Victor Ian]

Give me a clue dammit

Watch it all - that is the clue - the solution is in another one by matt parker.