Forum: Math
2005-09-23, 17:31
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Replies: 61
Views: 5,308
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Forum: Hardware
2005-08-04, 10:25
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Replies: 1
Views: 1,364
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Forum: Lounge
2005-08-03, 21:56
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Replies: 4,253
Views: 301,981
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Forum: Lounge
2005-07-04, 17:57
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Replies: 93
Views: 7,374
I don't have nearly as much detail:
...
I don't have nearly as much detail:
http://maps.google.com/maps?q=oxford,uk&ll=51.745472,-1.215963&spn=0.092139,0.140900&t=k&hl=en
Evidently more Google employees went to Cambridge than Oxford...
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Forum: GMP-ECM
2005-06-29, 02:23
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Replies: 0
Views: 1,307
Appeal for machines
The new gmp-ecm Number-Theoretic-Transform code is now pretty mature but there are still some compilation problems on non-x86 architectures. I'm particularly interested in testing on Sparc and Mac...
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Forum: Puzzles
2005-05-29, 21:01
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Replies: 46
Views: 2,277
Ken - I'm sure you can do better than that by...
Ken - I'm sure you can do better than that by using multi-character character constants (e.g. "int x = 'ab';") and the fact that integer arithmetic is done modulo 2^32. Or is it 2^64 on Wacky's mac?...
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Forum: Puzzles
2005-05-29, 20:33
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Replies: 46
Views: 2,277
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Forum: Puzzles
2005-05-29, 20:20
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Replies: 46
Views: 2,277
Here's another cheeky attempt:
#include...
Here's another cheeky attempt:
#include <iostream>
int main (int argc, char * const argv[]) {
int answer =
// BEGIN inserted code on the next line
#define answer false&&0
answer
...
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Forum: Puzzles
2005-05-29, 18:42
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Replies: 46
Views: 2,277
The only reason I didn't use 0 is that I didn't...
The only reason I didn't use 0 is that I didn't want to use more than one digit in the answer - I stuck the NULL in with full knowledge it would generate a warning but compile successfully :wink:
...
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Forum: Puzzles
2005-05-29, 13:59
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Replies: 46
Views: 2,277
Or for maximum cheekiness:
#include...
Or for maximum cheekiness:
#include <iostream>
int main (int argc, char * const argv[]) {
int answer =
// BEGIN inserted code on the next line
0;
#define answer cheat
class {
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Forum: Puzzles
2005-05-29, 13:43
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Replies: 46
Views: 2,277
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Forum: Puzzles
2005-05-29, 12:17
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Replies: 46
Views: 2,277
How about this for a digit-free solution?
...
How about this for a digit-free solution?
'.'*'-'-'A'
Since the rules require us to use at least one of the relevant digit, this can easily be modified to
x=0: '.'*'-'-'A'+0
x=1:...
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Forum: Homework Help
2005-05-25, 22:17
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Replies: 27
Views: 3,217
You could express any number as
|{}|! +...
You could express any number as
|{}|! + |{}|! + ... + |{}|!
where |{}|! = (cardinality of the empty set) factorial = 1
Without this kind of 'cheating' I can get 2005 down to seven 2's, I'd...
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Forum: GMP-ECM
2005-04-24, 09:03
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Replies: 5
Views: 1,335
Something I've been thinking about:
The...
Something I've been thinking about:
The -treefile option stores the product tree of F on disk; this reduces the memory consumption from O(dF * log(dF) * log(n)) to O(dF * log(n)) at the cost of...
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Forum: Math
2005-04-17, 23:32
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Replies: 5
Views: 1,376
The link between prime numbers and the Riemann...
The link between prime numbers and the Riemann hypothesis lies in analytic number theory - indeed the Prime Number Theorem was first proved using complex analysis.
The only book I've read on this...
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Forum: Math
2005-04-14, 18:18
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Replies: 9
Views: 1,038
Is your question the following?
Does there...
Is your question the following?
Does there exist a polynomial-time reduction from the problem "Discrete log in GF(p)" to the problem "Discrete log in GF(2^n)" ?
I put the 2^n in there because I...
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Forum: Lounge
2005-04-14, 18:09
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Replies: 7
Views: 2,025
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Forum: Programming
2005-04-10, 22:42
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Replies: 26
Views: 2,973
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Forum: Factoring
2005-04-10, 22:27
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Replies: 13
Views: 2,164
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Forum: Miscellaneous Math
2005-04-07, 14:45
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Replies: 10
Views: 5,573
Vijay,
Such claims are the quintessential...
Vijay,
Such claims are the quintessential form of trolling on maths forums. If you really believe you have a correct proof and you really don't want to share it with the whole world then
1)...
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Forum: Programming
2005-04-07, 14:14
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Replies: 7
Views: 4,460
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Forum: Programming
2005-04-07, 13:12
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Replies: 7
Views: 4,460
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Forum: Programming
2005-04-07, 13:10
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Replies: 7
Views: 4,460
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Forum: Factoring
2005-04-07, 10:25
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Replies: 11
Views: 2,210
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Forum: Factoring
2005-03-14, 08:54
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Replies: 2
Views: 786
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