mostly on computers and mathematics
8 followers 2 articles/week
[untgildg] second collision resistance

collisions in hash functions are unavoidable.  if you find one collision (messages A and B have the same hash), how easy is it to manufacture another collision (messages C and D have the same hash), or even an infinite collection of collisions? can cryptographic hash functions be designed to prevent collisions from easily yielding more collisions?

Tue Mar 26, 2024 09:49
[zcyknmrx] Red Line split at JFK and Savin Hill

on official diagrams, the MBTA Red Line is drawn to split into the Ashmont and Braintree lines south of JFK/UMass station.  in reality, the lines have already split north of the station, and the station has separate platforms for each line.  to catch the next northbound (inbound) train, you have to guess which platform to wait on.  there is technology...

Tue Mar 26, 2024 08:56
[bgjspxdr] 10 acres in a square furlong

one of the few places that multiples of 10 exist in U.S. customary units is obscure units of area: 10 square chain = acre 10 acre = square furlong however, this feels awkward because 10 congruent squares cannot be arranged into a larger square.  it would have been nice if our counting system were based on a square number. acre is a square with...

Wed Mar 20, 2024 01:33
[kdxqnhaz] Xingham, Xington

Arlington is the town where people "arl". Birmingham is the ham (old French for "village") where people "birm".no one knows what those words mean, so invent something: having lived in Arlington, I can confirm that people there arl, a lot.  I will never forget the looks on the faces of those gerbils.

Mon Mar 18, 2024 02:05
[fojocgym] no music of the sphere

prove that spherically symmetric redistributions of mass do not emit gravitational waves.   (you are smarter than Einstein.)

Mon Mar 18, 2024 01:58
[ybzzorsd] Truth Airlines

"welcome aboard __________ Airlines, where are priorities are profit safety"

Sun Mar 17, 2024 22:37

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