-
8 votes
-
The Trump administration drove him back to China, where he invented a fast coronavirus test
4 votes -
Testing the efficacy of homemade masks: Would they protect in an influenza pandemic?
8 votes -
An ancient Elpistostege fish fossil found in Miguasha, Canada has revealed new insights into how the human hand evolved from fish fins
5 votes -
Empathy is a clock that ticks in the consciousness of another: The science of how our social interactions shape our experience of time
7 votes -
Melbourne researchers have mapped immune responses from one of Australia’s first novel coronavirus (COVID-19) patients, showing the body’s ability to fight the virus and recover from the infection
9 votes -
Extraordinary conics: The most difficult math problem I ever had to solve
6 votes -
Scientists successfully created a cybernetic neural network
10 votes -
Joe Rogan Experience #1439 - Michael Osterholm (expert in infectious disease epidemiology)
14 votes -
How to tell matter from antimatter | CP violation and the Ozma problem
5 votes -
21-yr-old student from Pune and the curious case of her changing hands – intergender and interrace double-hand transplant
21 votes -
Lessons from the fields of crisis informatics and the sociology of disaster for COVID 19
8 votes -
Coronavirus COVID-19 models are starting to give us an idea of what a pandemic would look like, but there's still so much we don't know
11 votes -
"Both studies ... sought to pin down how many times the human brain oscillates in and out of focus per minute."
6 votes -
Scientists monitored brains replaying memories in real time
5 votes -
Computational predictions of protein structures associated with COVID-19
5 votes -
This marsupial, the swamp wallaby, is the only animal that's always pregnant
10 votes -
Real Numbers - Why? Why not computable numbers?
Do we have any mathematicians in the house? I've been wondering for a while why math is usually focused around real numbers instead of computable numbers - that is the set of numbers that you can...
Do we have any mathematicians in the house? I've been wondering for a while why math is usually focused around real numbers instead of computable numbers - that is the set of numbers that you can actually be computed to arbitrary, finite precision in finite time. Note that they necessarily include pi, e, sqrt(2) and every number you could ever compute. If you've seen it, it's computable.
What do we lose, beyond cantor's argument, by restricting math to computable numbers? By corollary of binary files and therefore algorithms being countable, the computable numbers are countable too, different from reals.
Bonus points if you can name a real, non-computable number. (My partner replied with "a number gained by randomly sampling decimal places ad infinitum" - a reply as cheeky as the question.) Also bonus points for naming further niceness properties we would get by restricting to computables.
I've read the wikipedia article on computable numbers and a bit beyond.
10 votes -
17 Klein Bottles become 1 - ft. Cliff Stoll and the glasswork of Lucas Clarke
12 votes -
Freeman Dyson, visionary technologist, is dead at 96
13 votes -
Coronavirus outbreak changes how scientists communicate
10 votes -
A surrogate cheetah gave birth to two cubs at the Columbus Zoo. This birth marks a scientific breakthrough: it is the first successful embryo transfer to have ever been performed on a cheetah
7 votes -
Physicists take their closest look yet at an antimatter atom
10 votes -
Electron microscope animation: Carbon nanotubes pulled into thread
8 votes -
Radical hydrogen-boron reactor could leapfrog current nuclear fusion tech
11 votes -
Giant phages have been found in French lakes, baboons from Kenya, and the human mouth
10 votes -
Machine learning for antibiotics
4 votes -
Upside-down jellyfish lob tiny grenades to kill prey
9 votes -
The invention of friends (Dunbar's Number)
5 votes -
Making radioactive uranium glass
5 votes -
Fair dice (part 2/2)
4 votes -
Fair dice (part 1/2)
4 votes -
The golden quarter—Some of our greatest cultural and technological achievements took place between 1945 and 1971. Why has progress stalled?
12 votes -
The Ideal Mathematician
6 votes -
'Ghost' DNA from unknown ancestors found in West Africans
9 votes -
Beyond identical or fraternal: Six rare types of twins
3 votes -
Dopamine and temporal difference learning: A fruitful relationship between neuroscience and AI
4 votes -
This is the (co)end, my only (co)friend
6 votes -
A brief history of quantum mechanics
7 votes -
Mathematicians prove universal law of turbulence
9 votes -
New Coronavirus Protease Structure Available
7 votes -
Russian and Egyptian multiplication
5 votes -
This equation (the logistic map) will change how you see the world
11 votes -
Happy Universal Palindrome Day!
19 votes -
A British cobbler had his thumb replaced with a big toe. He’d lost the digit while mending a shoe, but is now back at work with a toe grafted onto his hand.
5 votes -
Amateur astronomers have helped discover a new kind of northern lights, known as dunes
5 votes -
Deciphering the genetic diversity of leaf shapes
5 votes -
Arvind Narayanan: How to recognize AI snake oil
4 votes -
Mt. Þorbjörn, Reykjanes – Icelandic volcano swell signals potential eruption
4 votes -
Scientists just used a supercomputer to make a living organism from scratch
2 votes