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by katastrofa
Today, 9:18 am
Forum: Off Topic
Topic: Grammar Time!
Replies: 1914
Views: 294177

Re: Grammar Time!

And accidents happened ;-)
by katastrofa
Yesterday, 9:07 pm
Forum: Book And Research Paper Forum
Topic: David Orrell's q-variance paper in Wilmott
Replies: 31
Views: 1274

Re: David Orrell's q-variance paper in Wilmott

Quite the opposite. I wrote before that the mathematical formalism you're trying to use is a general framework for linear restoring forces; it isn't tied to any subatomic ontology. You also don't need physics metaphysics here. And it's perfectly fine to use "quantum" math wherever it works...
by katastrofa
September 16th, 2025, 11:08 am
Forum: Off Topic
Topic: Stupid question of the day
Replies: 3435
Views: 428234

Re: Stupid question of the day

Tags, you vain thing!

I do vanity searches quite often and find a lot of mugshots signed with my name - none of them is me (once I even found my google generated bio with a stranger face on it). Perfect for me - too many psychos out there.
by katastrofa
September 13th, 2025, 6:07 pm
Forum: Off Topic
Topic: Stupid question of the day
Replies: 3435
Views: 428234

Re: Stupid question of the day

Is there anything in life more irrelevant than tomato slices in a sandwich?
Homemade sourdough bread, hummus, homegrown tomato and onion - everything is highly relevant! :-)
Tomatoes are very healthy. Don’t buy the nightshades conspiracy theories!
by katastrofa
September 13th, 2025, 10:28 am
Forum: Book And Research Paper Forum
Topic: David Orrell's q-variance paper in Wilmott
Replies: 31
Views: 1274

Re: David Orrell's q-variance paper in Wilmott

As clearly stated, the model is not “repeating iid”, it sums over the ensemble, which does give a Gaussian (it’s called the Central Limit Theorem). "Ensemble" suggests a mixture (adding pdfs with weights), but you invoke CLT - adding random variables, so I'm guessing that you're adding th...
by katastrofa
September 2nd, 2025, 9:59 am
Forum: Off Topic
Topic: norway
Replies: 964
Views: 191114

Re: norway

That’s why I wanted to put a photo instead of writing 1000 words, but the forum says “HTTP Error …” :-/
by katastrofa
September 2nd, 2025, 9:59 am
Forum: Off Topic
Topic: norway
Replies: 964
Views: 191114

Re: norway

That’s why I wanted to put a photo instead of writing 1000 words, but the forum says “HTTP Error …” :-/
by katastrofa
August 30th, 2025, 6:28 pm
Forum: Off Topic
Topic: Machine learning for fun, to pay your rent or whatever
Replies: 380
Views: 54253

Re: Machine learning for fun, to pay your rent or whatever

I, for one, welcome our new AI overlords!
https://www.nature.com/articles/s41928-025-01433-y
They already can see us and soon they’re coming :-O
by katastrofa
August 30th, 2025, 4:06 pm
Forum: Off Topic
Topic: norway
Replies: 964
Views: 191114

Re: norway

Farewell Norway!

Attaching photos doesn’t work! :-)
by katastrofa
August 30th, 2025, 12:46 pm
Forum: Economics Forum
Topic: The Price of eggs
Replies: 99
Views: 9207

Re: The Price of eggs

Cat pee you need to dilute more. It's more concentrated.
by katastrofa
August 30th, 2025, 10:51 am
Forum: Book And Research Paper Forum
Topic: David Orrell's q-variance paper in Wilmott
Replies: 31
Views: 1274

Re: David Orrell's q-variance paper in Wilmott

Nice music! Let’s do q-variance first. The probability function of a coherent state is a normal distribution moving from side to side with amplitude x and period T. As you point out, the variance at any time is sigma^2. But what we use in the model is the variance over a complete period, which is s...
by katastrofa
August 25th, 2025, 9:30 pm
Forum: Economics Forum
Topic: The Price of eggs
Replies: 99
Views: 9207

Re: The Price of eggs

Premium!
And the branches are tied up with shreds of my mann's underpants - don't ask. I luv gardening!
Image
by katastrofa
August 25th, 2025, 9:29 pm
Forum: Economics Forum
Topic: The Price of eggs
Replies: 99
Views: 9207

Re: The Price of eggs

Premium!
And the branches are tied up with shreds of my mann's underpants - don't ask. I luv gardening!
Image
by katastrofa
August 25th, 2025, 8:45 pm
Forum: Economics Forum
Topic: The Price of eggs
Replies: 99
Views: 9207

Re: The Price of eggs

Tomato farming going really well this season. Just finished with pomidorinis. Now going for Rome and in a week or two for the whole globe!
BTW, urine diluted with water 1:10 is the best fertiliser.
by katastrofa
August 25th, 2025, 7:49 pm
Forum: Book And Research Paper Forum
Topic: David Orrell's q-variance paper in Wilmott
Replies: 31
Views: 1274

Re: David Orrell's q-variance paper in Wilmott

No thanks. One problem is that you seem to be confusing the 1/2 coefficient in q-variance, with lambda. The first comes from a simple energy balance – perturbing the oscillator by an amount z increases the energy and therefore the variance by this amount. The Qvar app is testing this relation. Lamb...