This is called the law of the excluded middle and there are in fact those who deny it, for example intuitionists (http://en.wikipedia.org/wiki/Intuitionism).
Yes, but it turns out that not all instances of 3-SAT (or SAT) actually require that much time. Do a search on Google for "phase transitions in SAT" for more information.
After reading the article at USC it seems to me that they have solved an instance of the Travelling Salsesman Problem of size 20 encoded in SAT, can anyone confirm or deny this?
Both the Java Virtual Machine and the intermediate
code created by GCC, RTL, are stack based, and
later interpreted or compiled for a register machine. It isn't really a problem, sometimes
it's actually easier that way.
It's true that it is mathematically impossible to ensure that a piece of fairly complex piece of code is bug-free...
Not impossible in an absolute sense, but merely extremely difficult.
No, it's actually impossible.
There is no way of proving that a program
terminates on a given input (in the general case), let alone that it is correct.
Proving correctness in respect to some specification can also be impossible (undecidable) in certain cases.
(Of course there is more to it than this, but
I can't be asked to explain it all right now...)
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That doesn't meant the investment is negative, it just means the return was negative. Going short the stock is a negative investment, however.
Don't quit your day job.
Grammar
This is called the law of the excluded middle and there are in fact those who deny it, for example intuitionists (http://en.wikipedia.org/wiki/Intuitionism).
A one time-pad is only unbreakable if it is truly random (statistically and algorithmically).
Yes, but it turns out that not all instances of 3-SAT (or SAT) actually require that much time. Do a search on Google for "phase transitions in SAT" for more information.
After reading the article at USC it seems to me that they have solved an instance of the Travelling Salsesman Problem of size 20 encoded in SAT, can anyone confirm or deny this?
Very interesting in any case, well done.
But 2-SAT is not in NP-complete nor needs exponential time. Maybe you're thinking of 3-SAT or just plain SAT?
There are only about 17 000 three-letter acronyms, sooner or later they will have to be reused.
Both the Java Virtual Machine and the intermediate
code created by GCC, RTL, are stack based, and
later interpreted or compiled for a register machine. It isn't really a problem, sometimes
it's actually easier that way.
- It's true that it is mathematically impossible to ensure that a piece of fairly complex piece of code is bug-free...
No, it's actually impossible.Not impossible in an absolute sense, but merely extremely difficult.
There is no way of proving that a program terminates on a given input (in the general case), let alone that it is correct.
Proving correctness in respect to some specification can also be impossible (undecidable) in certain cases.
(Of course there is more to it than this, but I can't be asked to explain it all right now...)
True. But wouldn't it go slightly faster anyway since the smaller matrices fit in the cache (i e blocking)? Just an idea.
"there's probably no better form of government than a good despot"
Which probably is true.
The hard thing is to define "good".
If you follow the link you'll find out that
this is exactly what it's used for, digitalising
of LPs.
The author doesn't seem to know much
r m.html
about the topic, for those interested
here is a much more accurate description:
http://mathworld.wolfram.com/FastFourierTransfo