Discussion:
Structura: /Seriously Applicable/ Math [*Recherché*]
(слишком старое сообщение для ответа)
Jeff Rubard
2010-02-06 04:02:38 UTC
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Mathematics and Human Interests

Now, for a piece of philosophy of mathematics. It’s hard to see how
you could take a “sideways-on” approach to mathematics: it is true if
anything is, right? Well, maybe we can stretch that out a little
further than what is involved in the usual Third Realm calisthenics. A
piece of mathematics is something that will be true for all time:
mathematical insight means seeing into the ages, what was and ever
will be. Conversely, lack of mathematical acuity — our inability to
solve a problem — is caused by the deceptions of the age, our follies
and delusions.

As regards my own very modest mathematical output, I have adduced
considerations that P cannot equal NP in ”A Cool Million (Some
Thoughts on P and NP)”, ”Further Thoughts on P and NP“, and ”Why P
Cannot Equal NP“. They do not have the form of a formal proof and have
failed to convince the contemporary complexity community (as a whole),
but it is my honest conviction that the very simple logical
difficulties associated with reducing the complexity of DEXPTIME-hard
NP-complete problems are insuperable. The considerations are “dumb”,
but honestly limitative results always are — the Incompleteness
Theorem is a piece of simple trickery that would hold no interest were
it not true.

Really, I think the hope that a brand new algorithm will crack the
problem is a pipe dream; the essential nondeterminacy of the
Satisfiability problem is just untouchable. Why does it appeal, then?
Because computer science is about technical control, and the
temptation of a computational Eden where all cryptographic algorithms
can be cracked and mathematical proofs grow on trees is just too
strong. (The harder-headed claim that problems from oracles — which
are rather moldy, as they can be read about in the original edition of
Hopcroft and Ullman – and other considerations may make the P and NP
question impossible to solve, but it may just be our own damn fault
for not defining our terms clearly. Always hard to tell.)
Big Red Jeff Rubard
2010-02-09 19:48:10 UTC
Permalink
New Style

Mathematics and Human Interests

Now, for a piece of philosophy of mathematics. It’s hard to see how
you could take a “sideways-on” approach to mathematics: it is true if
anything is, right? Well, maybe we can stretch that out a little
further than what is involved in the usual Third Realm calisthenics. A
piece of mathematics is something that will be true for all time:
mathematical insight means seeing into the ages, what was and ever
will be. Conversely, lack of mathematical acuity — our inability to
solve a problem — is caused by the deceptions of the age, our follies
and delusions.

As regards my own very modest mathematical output, I have adduced
considerations that P cannot equal NP in ”A Cool Million (Some
Thoughts on P and NP)”, ”Further Thoughts on P and NP“, and ”Why P
Cannot Equal NP“. They do not have the form of a formal proof and have
failed to convince the contemporary complexity community (as a whole),
but it is my honest conviction that the very simple logical
difficulties associated with reducing the complexity of DEXPTIME-hard
NP-complete problems are insuperable. The considerations are “dumb”,
but honestly limitative results always are — the Incompleteness
Theorem is a piece of simple trickery that would hold no interest were
it not true.

Really, I think the hope that a brand new algorithm will crack the
problem is a pipe dream; the essential nondeterminacy of the
Satisfiability problem is just untouchable. Why does it appeal, then?
Because computer science is about technical control, and the
temptation of a computational Eden where all cryptographic algorithms
can be cracked and mathematical proofs grow on trees is just too
strong. (The harder-headed claim that problems from oracles — which
are rather moldy, as they can be read about in the original edition of
Hopcroft and Ullman – and other considerations may make the P and NP
question impossible to solve, but it may just be our own damn fault
for not defining our terms clearly. Always hard to tell.)

----

For Sid part *deúx*: *number theory* is the metatheory of arithmetical
truths, including those [such as the rules for "interesting and
striking
numbers" like /perfect squares/ and *shit*] that are /not properly
appreciated/. Terrible to contemplate? *Non* [!!] — but it does those
that are *not already properly set up* to reflect on mathematical
truths depending /solely/ on simpler and /commonly known/ ones.
[*Seriös*.] [!! -- *das ist mir nicht ganz egal*, Deutschies.]
Unfortunate
if you are not already "properly set up" with the Received
Understanding
[!!, don't "act like you knew"] but when people do not have to play at
being Dewey teaching people how to "learn how to learn" they might
even still *know something important* even at the advanced age of
*63* or somethin'. [If they weren't Dad, mind you.] So you /might
well/
"get thee hence" to the Davenport and *I* [!!!!, deal since I now
"dig"]
didn't ask. Like that. Seriously.

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