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Today I learned that ...

2020-10-18
There is not only Three-sided football but also Four-player chess.
2020-10-13
While CAP imposes a trade off between consistency and availability during a partition, PACELC describes the base state as a trade off between consistency and latency.
2020-10-10
Portia is a genus of intelligent spider-eating spiders that probably are capable of learning and problem solving.
2020-10-08
There is no consensus without timeouts.
2020-10-07
The Tesla valve is a one-way valve without moving parts and very durable. It doesn't block the flow completely though.
2020-10-05
You can write a CPU using an HDL which then can be synthesized into a integrated circuit.
2020-10-05
There is an almost always division free algorithm to uniformly sample random integers from an interval.
2020-10-03
The Möbius strip can be embedded into R3 without self intersection and a circle as boundary.
2020-09-30
A k-d tree is a great data structure for searching in multiple dimensions.
2020-09-28
Distributed consistency is easy when the problem is monotonic.
2020-09-03
I need a website where I can collect and share all the things I learn.