samoright (u/samoright)

samoright commented on Beej's Quick Guide to GDB (2009) beej.us/guide/bggdb/... · Posted by u/ScottWRobinson

myrloc · 7 years ago

I'm a huge fan of his guides for their readability and straightforward delivery. I'm always on the lookout for more authors like him - have you come across any similar authors?

samoright · 7 years ago

Recently came across this nice guide on Git pull request workflow: https://github.com/susam/gitpr

All the important stuff is in the first 4 pages. I have the PDF version on my desktop. Also printed pages 3 and 4 and stuck it to my cubicle wall.

samoright commented on Ask HN: Recommend a new operating system that I could try · Posted by u/samoright

wooptoo · 8 years ago

I second FreeBSD, it's what I'd use if Linux were not available. Maybe look into other BSDs like NetBSD or OpenBSD.

NetBSD even runs on a toaster if you have any lying around :-) https://www.embeddedarm.com/blog/netbsd-toaster-powered-by-t...

samoright · 8 years ago

I am inclined to try either FreeBSD or OpenBSD.

FreeBSD comes with the bonus that it is supported on some cloud and VPS offerings, so whatever I learn can come useful for practical purpose.

But OpenBSD also seems like a great idea because I have read great things about its security and documentation.

I am not inclined to try NetBSD because it seems to offer neither of these advantages.

Is my assessment right so far or very misguided?

Is there anyone who has used at least two of these three BSDs? What do they recommend?

samoright commented on Software Engineer, Machine Learning deeplearning.ai/machinele... · Posted by u/foo101

daly · 8 years ago

I routinely work those hours. I love what I do, which is self-directed research in computer algebra. I'm retired, though, so I probably don't count.

samoright · 8 years ago

90 hours/week = 18 hours/day (assuming 5-day work week). That leaves only 6 hours for other chores, travel and sleep. This is not sustainable.

So I'll assume people who can pull off a 90-hour work week work all 7 days of the week which would amount to 13 hours/day. That still leaves sufficient time for a 7-hour sleep and 4 hours of chores and entertainment.

Now, if you are your own boss where you decide the scope and the deadlines, the work is going to be fun and I can understand that you would not mind working 13 hours/day. But I don't think working 13 hours/day for a boss or a company that considers me a cost in a business transaction of buying my skills is going to be fun.

samoright commented on Mathematicians Measure Infinities, Find They’re Equal quantamagazine.org/mathem... · Posted by u/lisper

clintonc · 8 years ago

The article is misleading on this point. The Continuum Hypothesis says that it is undecidable in the standard axioms whether there is a cardinality between countable and the continuum (i.e., the cardinality of the real). This work shows that p and t are different, which also means that t is of greater cardinality than the reals.

samoright · 8 years ago

What is p and t? You say that this work shows that p and t are different. What two entities are proven to be equal then in this work?

samoright commented on Mathematicians Measure Infinities, Find They’re Equal quantamagazine.org/mathem... · Posted by u/lisper

bjl · 8 years ago

Not all uncountable infinities are the same cardinality.

samoright · 8 years ago

So does this article prove that two uncountable infinities are equal? Can you tell us precisely what two entities have been proven equal in this article?

I understand aleph-0, aleph-1 and 2^aleph-0 and I also understand that if continuum hypothesis is true, then aleph-1 = 2^aleph-0. Is this what these mathematicians have proven, or have they proven something else?

samoright commented on Mathematicians Measure Infinities, Find They’re Equal quantamagazine.org/mathem... · Posted by u/lisper

gwf · 8 years ago

The cardinality of the reals has been known to be strictly greater than the cardinality of the naturals since Cantor. What the Continuum Hypothesis considers is the cardinality of the reals and the cardinality of the power set of the naturals. The power set of another set is the set of unique subsets of the first set. If the first set has cardinality of N, then the power set has cardinality 2^N. Thus, the reals can be considered to be exponentially more dense than the naturals.

Some intuition: while there may be N unique stocks on the NYSE, there could in theory be 2^N unique mutual funds that are based on the different combinations of stocks.

samoright · 8 years ago

Can you simplify for us what exactly have the mathematicians in this article proven?

I get that they have proven some infinity A = some infinity B but can you tell us what these A and B are.

Also, isn't the cardinality of reals equinumerous with that of the cardinality of the power set of naturals?

samoright commented on Mathematicians Measure Infinities, Find They’re Equal quantamagazine.org/mathem... · Posted by u/lisper

samoright · 8 years ago

> In a breakthrough that disproves decades of conventional wisdom, two mathematicians have shown that two different variants of infinity are actually the same size

I thought there are only two types of infinity and Cantor already proved that they are different.

* Uncountable infinity which is the cardinality of the set of real numbers

* Countable infinity which is the cardinality of the set of integers

Cantor has already proved that uncountable infinity is larger than countable infinity.

Is this article claiming that mathematicians have proved that these two infinities are equal now? Doesn't that contradict Cantor's proof? What's going on here? Is the Cantor's proof flawed or have we introduced a contradiction to mathematics?

samoright commented on Sublime Text 3.0 sublimetext.com/blog/arti... · Posted by u/fbnlsr

samueloph · 8 years ago

imagine living in a world where a good software like sublime text was free software...

i know i know, to monetize selling free software is impossible (when people say they're monetizing selling free software they're actually selling services related to that free software, not the software itself), but one can dream...

edit-> some people are confusing the term "free software", i'd like to clarify that i mean free as in free speech, not free as in free beer.

samoright · 8 years ago

There is no need to imagine. Emacs, Vim, Atom, Notepad++, etc. are all free software.

u/samoright

KarmaCake day90November 12, 2015View Original