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How to Tell a Mathematician You Love Them (2017)

139 points by vo2maxer 7y ago

mmhsieh 7y ago
better to just buy them an original batch of hagoromo chalk
- yori 7y ago
  What's the deal with Hagoromo chalk? Why is it a romantic gesture?
  - mmhsieh 7y ago
    https://medium.com/@jeremyjkun/a-teary-goodbye-to-hagoromo-d29df12f3bce https://medium.com/@jeremyjkun/a-teary-goodbye-to-hagoromo-d...
  - andai 7y ago
    How it's made (and why they went out of business), written by Hagamoro's president. https://asia.nikkei.com/Business/Companies/Hagoromo-president-explains-why-he-closed-down-his-beloved-chalk-business https://asia.nikkei.com/Business/Companies/Hagoromo-presiden...
  - odomojuli 7y ago
    I have a pack. It is literally just really good chalk. When you write a lot, it's nice to have a tool that doesn't put so much strain on your wrist.
- thanatropism 7y ago
  Or wallpaper a wall in your home with blackboard paint.
  - ebg13 7y ago
    Wallpaper with paint?
Zhyl 7y ago
For the group theorists out there: https://www.youtube.com/watch?v=BipvGD-LCjU https://www.youtube.com/watch?v=BipvGD-LCjU
mathpupil 7y ago
For the math geeks out here, can someone help me out with these two equations for Valentine heart - https://news.ycombinator.com/item?id=22317969 https://news.ycombinator.com/item?id=22317969?
- susam 7y ago
  Answered your question on that thread.
butterthebuddha 7y ago
No love for algebraists? :(
- snicker7 7y ago
  "Finite Simple Group of Order Two" (https://www.youtube.com/watch?v=BipvGD-LCjU https://www.youtube.com/watch?v=BipvGD-LCjU)
noblethrasher 7y ago
For the topologists. I included this note on the flowers to be delivered to my SO: Me: { 1/n : n ≥ 1 } You: { 0 } Us: Me ∪ You
- jacobajit 7y ago
  Can someone explain? Is this just everything in [0, 1]? What’s the topology reference?
  - whiteandnerdy 7y ago
    It's not everything in [0, 1] as e.g. 2/3 is missing. (n is conventionally an integer). If you have a set where there's an idea of the distance between two points (a metric space), you can talk about sequences where the points get arbitrarily close together. We call these Cauchy sequences. If a metric space has the property that every Cauchy sequence converges to a point in the space, we call it complete. The original set of all 1/n isn't complete because the sequence 1/2, 1/3, 1/4,... could only converge to 0, which isn't in the set. If we add 0 in, the set becomes complete. OP is saying their partner completes them :) It's even more sweet because OP's set has the additional property that all possible Cauchy sequences have the same limit of 0, so there's only one possible limit - every end goal of every part of the set is the same, the 0. No other number will do.
justlexi93 7y ago
You commute with all elements of my heart.

139 points by vo2maxer 7y ago

mmhsieh 7y ago

better to just buy them an original batch of hagoromo chalk

yori 7y ago
What's the deal with Hagoromo chalk? Why is it a romantic gesture?
- mmhsieh 7y ago
  https://medium.com/@jeremyjkun/a-teary-goodbye-to-hagoromo-d29df12f3bce https://medium.com/@jeremyjkun/a-teary-goodbye-to-hagoromo-d...
- andai 7y ago
  How it's made (and why they went out of business), written by Hagamoro's president. https://asia.nikkei.com/Business/Companies/Hagoromo-president-explains-why-he-closed-down-his-beloved-chalk-business https://asia.nikkei.com/Business/Companies/Hagoromo-presiden...
- odomojuli 7y ago
  I have a pack. It is literally just really good chalk. When you write a lot, it's nice to have a tool that doesn't put so much strain on your wrist.
thanatropism 7y ago
Or wallpaper a wall in your home with blackboard paint.
- ebg13 7y ago
  Wallpaper with paint?

Zhyl 7y ago

For the group theorists out there: https://www.youtube.com/watch?v=BipvGD-LCjU https://www.youtube.com/watch?v=BipvGD-LCjU

mathpupil 7y ago

For the math geeks out here, can someone help me out with these two equations for Valentine heart - https://news.ycombinator.com/item?id=22317969 https://news.ycombinator.com/item?id=22317969?

susam 7y ago
Answered your question on that thread.

butterthebuddha 7y ago

No love for algebraists? :(

snicker7 7y ago
"Finite Simple Group of Order Two" (https://www.youtube.com/watch?v=BipvGD-LCjU https://www.youtube.com/watch?v=BipvGD-LCjU)

noblethrasher 7y ago

For the topologists. I included this note on the flowers to be delivered to my SO: Me: { 1/n : n ≥ 1 } You: { 0 } Us: Me ∪ You

jacobajit 7y ago
Can someone explain? Is this just everything in [0, 1]? What’s the topology reference?
- whiteandnerdy 7y ago
  It's not everything in [0, 1] as e.g. 2/3 is missing. (n is conventionally an integer). If you have a set where there's an idea of the distance between two points (a metric space), you can talk about sequences where the points get arbitrarily close together. We call these Cauchy sequences. If a metric space has the property that every Cauchy sequence converges to a point in the space, we call it complete. The original set of all 1/n isn't complete because the sequence 1/2, 1/3, 1/4,... could only converge to 0, which isn't in the set. If we add 0 in, the set becomes complete. OP is saying their partner completes them :) It's even more sweet because OP's set has the additional property that all possible Cauchy sequences have the same limit of 0, so there's only one possible limit - every end goal of every part of the set is the same, the 0. No other number will do.

justlexi93 7y ago

You commute with all elements of my heart.