Search found 53 matches

by adityaS
23 Sep 2010 14:23
Forum: Technology & Economic Forum
Topic: BR Maths Corner-1
Replies: 1817
Views: 123746

Re: BR Maths Corner-1

Amber G: Interesting, thank you. I will see if my discount bookstore has a copy of Plofker.

Here's a fairly old problem from the IMOs that is easy to state, but not so easy to solve:

Determine all pairs (a,b) of positive integers such that ab^2+b+7 divides a^2b+a+b.
by adityaS
17 Sep 2010 15:29
Forum: Technology & Economic Forum
Topic: BR Maths Corner-1
Replies: 1817
Views: 123746

Re: BR Maths Corner-1

geeth wrote:I read somewhere that the infinite series was developed in Kerala in the 14th Century and that was the basis for Newton's invention of Calculus


Nilakantha did some wonderful work on astronomy, and though the pieces are definitely there, I don't think Calculus was explicitly developed.
by adityaS
29 May 2009 16:44
Forum: Trash Can Archive
Topic: Terrorist Islamic Republic of Pakistan - May 16 2009
Replies: 398
Views: 16995

Re: Terrorist Islamic Republic of Pakistan - May 16 2009

^^^ Isn't Walid Phares writing what seems to be the US aim in this whole mess? Drag India into the fighting, and withdraw slowly so that no one says too loudly that they've landed into what is almost Vietnam 2.0 . Other news articles: Article about the so-called "good" Taliban who have kid...
by adityaS
28 May 2009 17:10
Forum: Trash Can Archive
Topic: Terrorist Islamic Republic of Pakistan - May 16 2009
Replies: 398
Views: 16995

Re: Terrorist Islamic Republic of Pakistan - May 16 2009

Shahzad on the blasts: Al-Qaeda strikes back in Lahore However, the real trigger for the Lahore attack, planned by more than two Pakistani groups, was the recent clampdown on a major al-Qaeda sanctuary in Mohmand Agency. ... Al-Qaeda also has sanctuaries in Bajaur Agency, which, like Mohmand, border...
by adityaS
27 May 2009 19:45
Forum: Trash Can Archive
Topic: Terrorist Islamic Republic of Pakistan - May 16 2009
Replies: 398
Views: 16995

Re: Terrorist Islamic Republic of Pakistan - May 16 2009

Taliban stuck between anvil and hammer Article claims that avoiding guerilla warfare and taking control of provinces was a bad idea. One gem highlighted: In going on the offensive toward Islamabad, the TTP had to forego the advantages of insurgents and, to some extent, fight in a conventional manne...
by adityaS
27 May 2009 19:40
Forum: Technology & Economic Forum
Topic: Indian IT Industry
Replies: 3944
Views: 342819

Re: Indian IT Industry

What is scary is that a lot of Indian syllabus still deals with outdated (and non-standard) tech. I get a lot of Indian fresh-out-of-college types who think Turbo-C 1.0 or 2.0 is the begin and end all for C compilers and can't understand why writing to a text segment causes a program crash in moder...
by adityaS
23 May 2009 09:54
Forum: Trash Can Archive
Topic: Terrorist Islamic Republic of Pakistan - May 16 2009
Replies: 516
Views: 151631

Re: Terrorist Islamic Republic of Pakistan - May 16 2009

Thanks ramanaji, brihaspatiji, NRaoji, Acharayaji, others for the earlier insights. About the blast: (Reuters does an interesting implication in the headline): U.N. seeks aid for Pakistanis; bomb kills six The United Nations launched an appeal on Friday for $543 million for more than 2 million peopl...
by adityaS
22 May 2009 17:44
Forum: Trash Can Archive
Topic: Terrorist Islamic Republic of Pakistan - May 16 2009
Replies: 516
Views: 151631

Re: Terrorist Islamic Republic of Pakistan - May 16 2009

SSridhar sir: right, that seems to be the reasoning to keeping the military tied in Swat. I still don't understand the plan to assassinate Kiyani. Even the most deluded jihadi would not risk the response on a rough plan that might well have failed, particularly since the person they were trying to k...
by adityaS
22 May 2009 16:11
Forum: Trash Can Archive
Topic: Terrorist Islamic Republic of Pakistan - May 16 2009
Replies: 516
Views: 151631

Re: Terrorist Islamic Republic of Pakistan - May 16 2009

Continuation of the earlier article on AlQ seeking a new alliance. The reporter has allegedly (I love this word) done an interview with some unnamed "top ideologue". The story is very interesting, if true: Al-Qaeda keeps its eyes on Afghanistan An al-Qaeda-linked cell led by veteran Kashmi...
by adityaS
20 May 2009 16:19
Forum: Trash Can Archive
Topic: Terrorist Islamic Republic of Pakistan - May 16 2009
Replies: 516
Views: 151631

Re: Terrorist Islamic Republic of Pakistan - May 16 2009

Interesting article: Al-Qaeda seeks a new alliance He said that al-Qaeda had already anticipated that Washington would bring Pakistan and India on board in the fight against militants, and even try to get cooperation from Iran. The aim would be to geographically isolate the militants. But the milita...
by adityaS
19 May 2009 20:20
Forum: Trash Can Archive
Topic: Terrorist Islamic Republic of Pakistan - May 16 2009
Replies: 516
Views: 151631

Re: Terrorist Islamic Republic of Pakistan - May 16 2009

Operation de-nuke, Kashmir-grab, castrate India & prop up TSP Typical: India should take the lead in initiating arms control talks with Pakistan and China. It should also declare its intention to stop producing nuclear weapons fuel (what is this saar?) , even before a proposed multinational tre...
by adityaS
18 May 2009 18:58
Forum: Trash Can Archive
Topic: Terrorist Islamic Republic of Pakistan - May 16 2009
Replies: 516
Views: 151631

Re: Terrorist Islamic Republic of Pakistan - May 16 2009

hmmm... perhaps Jagan can shed light on this. Polish fighter pilots maybe, quetta maybe, but dogfights over quetta? what is he talking about? Yes, that surprised me, too - the only reference I could quickly find was that there was a significant Polish refugee presence in India till the war ended. T...
by adityaS
18 May 2009 17:41
Forum: Trash Can Archive
Topic: Terrorist Islamic Republic of Pakistan - May 16 2009
Replies: 516
Views: 151631

Re: Terrorist Islamic Republic of Pakistan - May 16 2009

The article on the current fatwa declaring the IEDology of PakistaN Un-Islamic is here: Ulema term suicide attacks, beheading un-Islamic What does this mean? Rehman further said that practice to surrender before the gunpoint should end and urged a decisive offensive agains [sic] the militants. Are ...
by adityaS
20 Apr 2009 20:41
Forum: Technology & Economic Forum
Topic: BR Maths Corner-1
Replies: 1817
Views: 123746

Re: BR Maths Corner-1

Bah, my mistake :( The overcounting should have been obvious.


Shouldn't that be 89, btw?
by adityaS
18 Apr 2009 10:12
Forum: Technology & Economic Forum
Topic: BR Maths Corner-1
Replies: 1817
Views: 123746

Re: BR Maths Corner-1

I'm not sure that answer is correct, because Amber says the first and last chairs have only one neighbour, rather than the chairs being in a circle. The 'how to solve it' is, I guess, to place 7 markers that divide the chairs into 7 groups of two (who can either sit in their own chairs, or swap), an...
by adityaS
15 Apr 2009 20:35
Forum: Strategic & Security Issues Archive
Topic: Perspectives on the global economic meltdown
Replies: 3894
Views: 374076

Re: Perspectives on the global economic meltdown

from Reuters: Yahoo to cut hundreds of jobs: source Yahoo Inc is preparing to lay off several hundred workers in the first round of cuts since Carol Bartz became chief executive in January, a source with knowledge of the situation told Reuters. The layoffs could be announced next Tuesday, when Yahoo...
by adityaS
14 Apr 2009 18:08
Forum: Strategic & Security Issues Archive
Topic: Indian Economy: News and Discussion (June 8 2008)
Replies: 2768
Views: 366422

Re: Indian Economy: News and Discussion (June 8 2008)

An interesting (if slightly slanted) take from the Asia Times on how our elections may affect the economy: The world's most important election By Martin Hutchinson There was a gradual easing of controls in the 1980s and a somewhat more vigorous one after 1991 under prime minister Narasimha Rao and h...
by adityaS
12 Apr 2009 13:27
Forum: Technology & Economic Forum
Topic: Indian IT Industry
Replies: 3944
Views: 342819

Re: Indian IT Industry

ArmenT, I take it you've never had to "fix" template-heavy C++ code to work on older VC compilers? :)

Microsoft did clean up their act after VC2005, and VC2008 is really good. The intel compilers are better, but only if you're developing for intel chips.
by adityaS
12 Apr 2009 13:02
Forum: Technology & Economic Forum
Topic: Indian IT Industry
Replies: 3944
Views: 342819

Re: Indian IT Industry

Saar, could you give me some pointers as to how to do this in FORTRAN. It's not like I can convince anyone in the office to change to FORTRAN, but I figure I'll learn about it in my spare time just because :D. Oddly enough, some places still do write high-performance code in fortran. Older netlib a...
by adityaS
10 Apr 2009 12:59
Forum: Technology & Economic Forum
Topic: Indian IT Industry
Replies: 3944
Views: 342819

Re: Indian IT Industry

in the days of yore college campuses had no distractions - no internet, next to no girls (and those that existed were not good), no money, no pool parlors nearby, no bakeries/juice junctions to 'treat' girls to, a moth eaten movie hall maybe, bad food, no ethernet in rooms => no p0rn on tap, no tor...
by adityaS
10 Apr 2009 12:33
Forum: Technology & Economic Forum
Topic: Indian IT Industry
Replies: 3944
Views: 342819

Re: Indian IT Industry

Gosh, it sucks to be stuck in an empty office on a long weekend.. Hey, but I get time to blog! :wink: . likewise ;) Man.. You guys have been brainwashed by all the database Oracle dudes.. Indexed files have existed forever in major platforms like IBM and DEC. Lets take a bet. You take the fastest T...
by adityaS
10 Apr 2009 12:20
Forum: Technology & Economic Forum
Topic: Indian IT Industry
Replies: 3944
Views: 342819

Re: Indian IT Industry

^^ Okay, I deserved that one :) If you can reveal it, I'd be interested in knowing what are you building with the device, and the reasons to choose that particular microcontroller. 4k seems about right to put in a basic forth implementation to make writing things on top of it easier, but there are r...
by adityaS
10 Apr 2009 11:47
Forum: Technology & Economic Forum
Topic: Indian IT Industry
Replies: 3944
Views: 342819

Re: Indian IT Industry

@merlin: real men use bits from /dev/random to write programs ;) And why should modern present day kids go back to fighting with sword when they have an assault rifle which sprays 40000000000 bullets a minute and also has an integrated laser pointer sight, which can hit bulls eye at 600 yards in a s...
by adityaS
10 Apr 2009 10:54
Forum: Technology & Economic Forum
Topic: Indian IT Industry
Replies: 3944
Views: 342819

Re: Indian IT Industry

^^ just curious, does that terminal have internet access? ;) if nothing else, it is a good test to see if someone can search for code on the net.
by adityaS
10 Apr 2009 10:44
Forum: Technology & Economic Forum
Topic: Indian IT Industry
Replies: 3944
Views: 342819

Re: Indian IT Industry

pgbhat wrote:You miss auto-completion/intellisense initially but gain tremendous understanding of the language ;).
JMT


vi(m) has autocompletion too, and I prefer that to IDEs - though some of the addons for VS look really useful.
by adityaS
10 Apr 2009 10:25
Forum: Technology & Economic Forum
Topic: Indian IT Industry
Replies: 3944
Views: 342819

Re: Indian IT Industry

we are growing a generation of pansies. time to slap people around and wake them up. The current job market will take care of that more effectively than I perhaps want it to. As for the candidates from IITs and such, I believe that the really good ones run out of India to do their PhDs, and usually...
by adityaS
05 Apr 2009 22:10
Forum: Trash Can Archive
Topic: International Aerospace Discussion
Replies: 516
Views: 162865

Re: International Aerospace Discussion

The ballistic-missile-test-or-not debate is quite amusing. Guardian [...]the foreign secretary, David Miliband, described this morning's North Korean move as a "satellite launch". SCMP “Even if a satellite was launched, we see this as a ballistic missile test and we think this matter shoul...
by adityaS
04 Apr 2009 12:11
Forum: Technology & Economic Forum
Topic: BR Maths Corner-1
Replies: 1817
Views: 123746

Re: BR Maths Corner-1

Nice one, ArmenT! The powers of 1 + sqrt(2): sqrt( 1 ) + sqrt(2) sqrt(8) + sqrt( 9 ) sqrt( 49 ) + sqrt(50) sqrt(288) + sqrt( 289 ) sqrt( 1681 ) + sqrt(1682) ... the sequence gives quite a few recurrence relations to calculate the lesser term (I didn't build a large enough table of differences to spo...
by adityaS
02 Apr 2009 21:39
Forum: Technology & Economic Forum
Topic: BR Maths Corner-1
Replies: 1817
Views: 123746

Re: BR Maths Corner-1

And here I thought the jai to GvR was something like "the BDFL is retiring. Long live the BDFL!" for April 1 ;) Historically, extended-precision reals do come from fortran IIRC, so you're right. Your analysis of the problem, is of course, complete and correct in all respects. Let me try no...
by adityaS
02 Apr 2009 11:06
Forum: Technology & Economic Forum
Topic: BR Maths Corner-1
Replies: 1817
Views: 123746

Re: BR Maths Corner-1

ArmenT, wouldn't using

Code: Select all

a[0]=11/2
a[1]=61/11


give the wrong results, even when, as you write, rational numbers are available? I think this problem was designed to show what happens if values are plugged in blindly to a formula. economic collapse, anyone? :D
by adityaS
02 Apr 2009 08:14
Forum: Technology & Economic Forum
Topic: BR Maths Corner-1
Replies: 1817
Views: 123746

Re: BR Maths Corner-1

Amber G, exactly! Something like 140 digits of precision are required to avoid error propagation when this computation is repeated 100 times or so using floating-point numbers. Doing it by hand, or using rational numbers avoids this problem, of course. This is a sequence discovered by Jean-Michel Mu...
by adityaS
01 Apr 2009 21:16
Forum: Technology & Economic Forum
Topic: BR Maths Corner-1
Replies: 1817
Views: 123746

Re: BR Maths Corner-1

All the talk about Fermat's theorem being "disproved" reminded me of this little curiosity - had quite a bit of trouble when I first saw this in college. Given the sequence: a[0] = 11/2 a[1] = 61/11 a[n+1] = 111 - (1130 - (3000 / a[n-1])) / a[n] It's possible to prove that this converges, ...
by adityaS
31 Mar 2009 18:15
Forum: Military Issues & History Forum
Topic: Indian Navy and International Anti-Piracy Ops
Replies: 1192
Views: 198439

Re: Indian Navy anti-piracy ops.

ramana sir, from Reuters of Oct 2008

The pirates are said to be using MANPADS (Man Portable Air Defense Systems) and rocket propelled grenades during their attacks. They also have GPS systems and satellite phones.
by adityaS
30 Mar 2009 11:08
Forum: Technology & Economic Forum
Topic: BR Maths Corner-1
Replies: 1817
Views: 123746

Re: BR Maths Corner-1

probably OT, but does anyone else solve problems on Project Euler?
by adityaS
30 Mar 2009 09:02
Forum: Technology & Economic Forum
Topic: BR Maths Corner-1
Replies: 1817
Views: 123746

Re: BR Maths Corner-1

sum: that's correct - depending on how you implement the LFSR, it should get "stuck" at either all 0's or all 1's - any other state means that the pattern generated has the longest period possible, which is because it basically transitions through all states in [1,2^n-1] . A different star...
by adityaS
29 Mar 2009 15:16
Forum: Technology & Economic Forum
Topic: BR Maths Corner-1
Replies: 1817
Views: 123746

Re: BR Maths Corner-1

The optimal LFSR is a primitive polynomial of GF(2), are you looking for a proof of this, or a method to check whether a particular polynomial is primitive ? If I remember right (please check!), you need to prove that the polynomial divides x^(2^128-1)-1 . I assume you're been doing the autocorrelat...
by adityaS
26 Mar 2009 10:57
Forum: Strategic & Security Issues Archive
Topic: Indian Economy: News and Discussion (June 8 2008)
Replies: 2768
Views: 366422

Re: Indian Economy: News and Discussion (June 8 2008)

^^^ RM: thanks for the links to RUPE, it makes for interesting reading. The article on the economy is particularly good material for the Rhetoric and Dialectic thread.
by adityaS
09 Jan 2009 11:57
Forum: Terrorism Archive
Topic: Indian Response to Terrorism after Mumbai
Replies: 714
Views: 63671

Re: Indian Response to Terrorism after Mumbai

Kasab's Defence The eminent criminal lawyer had said that "even a hundred Ram Jethmalanis cannot save Kasab from the death penalty". But here's something that can... Essentially the claim is that the defence can argue that Kasab was on a trained army mission and hence is a prisoner of war...
by adityaS
15 Dec 2008 19:32
Forum: Terrorism Archive
Topic: Terror Attacks in Mumbai - IV
Replies: 2097
Views: 189744

Re: Terror Attacks in Mumbai - IV

From an article about failed islamic states comes this gem: A final note: several readers have asked me to comment on the terror attack on Mumbai in November. I will do so with great caution, given the absence of accurate information. I have good reason to believe that the Indian authorities lied ab...
by adityaS
15 Dec 2008 17:36
Forum: Strategic & Security Issues Archive
Topic: Perspectives on the global economic meltdown
Replies: 3894
Views: 374076

Re: Perspectives on the global economic meltdown

ss_roy, Arnab, all: great posts, great gyaan.

Could you recommend reading material so that a beginner at economics can learn more (and hopefully understand better)?

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