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Search: Posts Made By: xilman
Forum: Soap Box 2022-09-25, 16:48
Replies: 403
Views: 21,821
Posted By xilman
Or they would prefer to keep Russian...

Or they would prefer to keep Russian troublemakers making their trouble inside Russia.
Forum: Puzzles 2022-09-25, 16:47
Replies: 32
Views: 13,264
Posted By xilman
And do you believe in the CH?

And do you believe in the CH?
Forum: Science & Technology 2022-09-25, 16:44
Replies: 58
Views: 7,777
Posted By xilman
I get my fourth tomorrow, all being well.

I get my fourth tomorrow, all being well.
Forum: Factoring 2022-09-25, 16:43
Replies: 8
Views: 272
Posted By xilman
Kolmogorov might like to have a word with you.

Kolmogorov might like to have a word with you.
Forum: Soap Box 2022-09-21, 08:09
Replies: 403
Views: 21,821
Posted By xilman
Happened this morning instead.

Happened this morning instead.
Forum: GMP-ECM 2022-09-18, 18:51
Replies: 25
Views: 1,263
Posted By xilman
I wouldn't spend too much effort investigating it...

I wouldn't spend too much effort investigating it myself. It is interesting, but as long as the factor is valid, who cares in the end?
Forum: Lounge 2022-09-18, 18:49
Replies: 1,714
Views: 164,004
Posted By xilman
No, that is still running fine, albeit upside...

No, that is still running fine, albeit upside down because of the cpu cooling fan. Your very kind replacement fan is waiting until the old one dies completely.

Thanks for the offer. I need to...
Forum: Lounge 2022-09-18, 15:47
Replies: 1,714
Views: 164,004
Posted By xilman
The house-everything server died. Flatly refused...

The house-everything server died. Flatly refused to power anything, despite trying different PSU, mains leads etc. I guess the motherboard has caught a case of chronic death.

Luckily SWMBO's old...
Forum: MattcAnderson 2022-09-17, 06:57
Replies: 1
Views: 131
Posted By xilman
"maths" is not a plural in the UK, any more than...

"maths" is not a plural in the UK, any more than is "mathematics" anywhere. We say "Maths is hard" equivalently to "Mathematics is hard".

The difference is historical. Originally the singular was...
Forum: Astronomy 2022-09-14, 07:02
Replies: 15
Views: 887
Posted By xilman
"Almost" every amateur astronomer. The great...

"Almost" every amateur astronomer.

The great majority of amateur astronomers either live north of Sao Paulo or can access a robotic observatory in the northern hemisphere.

If I wished I could...
Forum: Astronomy 2022-09-13, 18:27
Replies: 15
Views: 887
Posted By xilman
No, it was purely coincidental that I imaged that...

No, it was purely coincidental that I imaged that region, though I admit to stealing "most important" tag from a post in Cloudy Nights. I didn't find out until this morning that there was an...
Forum: Lounge 2022-09-12, 18:32
Replies: 5
Views: 214
Posted By xilman
Happens. Try looking at the maps of roads...

Happens.

Try looking at the maps of roads (only one, actually) which cross the lava flows on La Palma.
Forum: Factoring 2022-09-11, 15:55
Replies: 106
Views: 8,429
Posted By xilman
That's not so big. We used almost that much...

That's not so big.

We used almost that much to factor RSA-129 almost thirty years ago. Sieving on moderately powerful machines by the standards of the day and linear algebra on a MasPar...
Forum: Astronomy 2022-09-10, 18:18
Replies: 15
Views: 887
Posted By xilman
Thanks for the info. I will pop by the Cambridge...

Thanks for the info. I will pop by the Cambridge branch and see whether it is worth buying.
Forum: GMP-ECM 2022-09-10, 13:27
Replies: 35
Views: 8,710
Posted By xilman
"man 1 man" goes into further detail.

"man 1 man" goes into further detail.
Forum: Astronomy 2022-09-10, 10:46
Replies: 15
Views: 887
Posted By xilman
That is also subscription-only where I live. ...

That is also subscription-only where I live.

I am told that it, like SciAm, has been so dumbed down that it is no longer worth reading. I have no idea how credible such reports may be.

In the...
Forum: Astronomy 2022-09-09, 19:31
Replies: 15
Views: 887
Posted By xilman
Nope. I do not have a subscription and have...

Nope.

I do not have a subscription and have not seen that issue. Not easily available in either the UK or La Palma.
Forum: Astronomy 2022-09-09, 12:50
Replies: 15
Views: 887
Posted By xilman
Actually, the seeing is not especially good near...

Actually, the seeing is not especially good near El Paso. We are below the inversion layer (above which sub-arcsec seeing is normal) and downwind of the Cumbre Vieja, the katabatic winds from which...
Forum: Soap Box 2022-09-09, 12:43
Replies: 14
Views: 1,119
Posted By xilman
Never heard her express any interest in that form...

Never heard her express any interest in that form of music. It is spelled with a silent-C by the way.
Forum: Lounge 2022-09-09, 10:43
Replies: 16
Views: 208
Posted By xilman
Brenda is dead, long live Brian!

Brenda is dead, long live Brian!
Forum: Lounge 2022-09-09, 10:42
Replies: 16
Views: 208
Posted By xilman
Likely next year. Just possibly this year....

Likely next year. Just possibly this year. Postage stamps may appear sooner.


The Royal Mint will not be making any more QEII currency and stamps but there is an easily adequate amount in...
Forum: Astronomy 2022-09-08, 06:33
Replies: 15
Views: 887
Posted By xilman
I am quite certain you can identify them if you...

I am quite certain you can identify them if you try hard enough.

All you need to do is put a coordinate grid (called a WCS in the trade) on that image (or ask me for the one which is already so...
Forum: Astronomy 2022-09-07, 21:20
Replies: 15
Views: 887
Posted By xilman
You need to consult the literature for that...

You need to consult the literature for that version.

Note that my image is at least as good as Hubble's, despite having 1/6 of the aperture and perhaps 10% of the exposure time.

A consequence...
Forum: Other Mathematical Topics 2022-09-07, 16:47
Replies: 4
Views: 570
Posted By xilman
Came across it many years ago when I was provided...

Came across it many years ago when I was provided with a Matlab script. Unfortunately, it was not sufficiently compatible back then.

Time I took another look.
Forum: Astronomy 2022-09-07, 15:01
Replies: 15
Views: 887
Posted By xilman
One of the most important stars in the history of astronomy.

The attached image shows "Var 1" as Hubble called it. It lies in what was then called the Great Nebula in Andromeda, aka Messier 31. my measuring its brightness (about magnitude 19) and the period of...
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