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jerry40

64 karma · joined September 2, 2015

https://github.com/jerry40
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jerry40··on Ask HN: Anyone designs financial engineering tools as a hobby?
At one on the previous jobs I wrote a tool which takes a list of bonds/equities trades and ties buys and sells in order to count PnL. The idea was any sell should be connected with one or several buys/repos. Like, I sell 100 bonds , so I should take them from 5 buys in correct order (FIFO).

It seems easy to do this but there are tricky operations like REPOs when you have to 'borrow' papers from a reversal REPO to perform a sell or REPO operation. Then you should close this hole with a next papers arrival. I wanted to attach some web interface to visualize these crazy buys-sells-repos chains but at some moment I left that company.

I want to rewrite that tool as a side project but not sure if it would be helpful for anybody.

jerry40··on The Language of the Roman Empire
Thanks for the explanation! Mirroring the letters is very unusial concept for me. I've tried to write down a mirrored word and it was not very difficult actually. It is definitely readable.
jerry40··on The Language of the Roman Empire
Wow, the Oscan language had the letter "Я". I thought it exists in cyrillic alphabets only. I know they are different letters having (perhaps) different pronunciation but still. Interesting!
jerry40··on Gödel and the unreality of time
Nothing is real in the simulation, I believe.
jerry40··on Gödel and the unreality of time
You sell illusory time for illusory money in the simulation, so espresso is illusory too, I'm afraid.
jerry40··on Tesla reviewing contractors, firing everyone not vouched for by an employee
For a Russian it is nice to hear about a matryoshka from Musk. (sorry for useless comment)
jerry40··on The Underrated Pleasures of Eastern European Dumplings
How it is possible to know who invented any sort of food? You never can be sure.
jerry40··on Google confirms some of its own services blocked in Russia over the Telegram ban
Google.com and gmail.com are not working on my side. Even worse, HN search is not working as well! Also on Sat MSDN loaded very slowly. Yesterday it became much better.
jerry40··on Mossad 2018 challenge
Perhaps, but the fact IP hidden behind the wall means that this challenge is not for everyone. Disappointing. Good luck in your adventure though!
jerry40··on Mossad 2018 challenge
Ok, so actually the puzzle has been cracked. Nothing else we can do. This end was definitely not happy.
jerry40··on Mossad 2018 challenge
z.\SUY.ZA... and Israel-is-70 (text from the picture) have the same length.

Coincidence?

jerry40··on Elementary Algebra by K. E. Iverson (1971) (pdf)
Thanks! It is very interesting language indeed and the book is very useful to make first steps in APL.
jerry40··on China’s web censors go into overdrive as President Xi Jinping consolidates power
In Beijing you could easily say the same since there are no laws against blaming the USA presidents in China I guess.
jerry40··on China’s web censors go into overdrive as President Xi Jinping consolidates power
External pressure as one of reasons of USSR collapse? Come on, really. You can't be serious. It had lived under much more strong pressure more than 70 years before authority decided to demolish the union. What pressure do we speak about? Commodity prices decrease? I can't believe the west is involved in the free market manipulations though. Unthinkable.
jerry40··on What is happening in the Arctic is now beyond words, so here are the pictures
What if some countries said "don't refreeze us, we're ok"?
jerry40··on Ask HN: How do you organize and keep track of stuff you've read online?
Evernote could help, it allows you to add tags to a bookmarked article.
jerry40··on Exquisite Corpse: The Winter of 1947 in Europe
> and when the Soviet propaganda became crudely anti-Western

In spite of Churchill's speech in Fulton it was inevitable I think.

jerry40··on Intense laser experiments provide evidence that light can stop electrons
Interesting! Thanks
jerry40··on Intense laser experiments provide evidence that light can stop electrons
> If electrons scatter photons, then photons scatter electrons.

Does it mean that photons are able to scatter photons?

jerry40··on You thought quantum mechanics was weird: check out entangled time
So there is no time, we just live in a constant moment which changes according to our measurements. A "Groundhog day" with different mornings.
jerry40··on Did Ancient Greeks Sail to Canada?
Perhaps... By the way, could he mean longitude instead of latitude? I find it more logical to mention Volga river delta in this case.
jerry40··on Did Ancient Greeks Sail to Canada?
It is very strange to address some place in America with Volga river delta. Like "Have you been to Ohio? Yes, that Ohio which more or less lines up with Astrakhan".
jerry40··on The shortest path from the chip to the math (Forth/APL)
The link is broken
jerry40··on Colliding neutron stars falsify some theories of gravity
Yes, I know that coincidence of two such events is highly unlikely, but to "compare" paths of gravitons and photons we need to imagine how much time divides 2 emission events. Seconds? Minutes? Hours? Perhaps it isn't very important but it's still interesting.
jerry40··on Colliding neutron stars falsify some theories of gravity
But how do we know that light and gravitational wave were emitted exactly at one moment? It is not obvious for me.
jerry40··on Anti-aging stem cell treatment proves successful in early human trials
Very interesting! Thanks for advice!
jerry40··on Anti-aging stem cell treatment proves successful in early human trials
I agree, there are many details which an author will need to explain. People can be protected by mighty authorities and live in a safe environment. But those medications will be prohibited of course. In other case people just will not be working!
jerry40··on Anti-aging stem cell treatment proves successful in early human trials
Oh I'm sure there will be companies that provide a right to die for reasonable price (sized about 70-80 year salary I guess).

Pity I'm not a writer, I think it is a good idea for anti-utopia about the world where people work to get a permission to die.

jerry40··on DHS Plans To Gather Social Media Info
I only hope it isn't a big crime if a person doesn't participate in any social network.
jerry40··on 6 Reasons Why I Am Done with AirBnB as a Renter
Startup idea - "real-airbnb-reviews" where you can post your uncensored experience.
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