Early computer art - reproducing Georg Nees "Schotter" and "K27"
How to match a pattern only when it is not used as a head?
What's the difference between With and ReplaceAll?
Why can't I use logic operator Or to specify multiple events with WhenEvent?
Ordering with repeats
How to "factor out" units?
Getting formulas like $E[\operatorname Tr (A^3 (A^T)^3]=n^4+10n^2+4n$
Early computer art - reproducing Georg Nees "Schotter" and "K27"
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=298265
Georg Nees (1926 - 2016) was a pioneer of computer art. He studied mathematics, physics and philosophy in Erlangen and Stuttgart. In 1977, he was appointed Professor of Applied computer science at the ... [plotting] [graphics] [generative-art]
asked by eldo https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=14254 Score of 21 answered by Daniel Huber https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=46318
Score of 14 How to match a pattern only when it is not used as a head? https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=298374
I am working on modifying a mathematical expression and need some assistance. I have the following equation: -27 f + 27 f[1 + n] - 9 f[2 + n] + f[3 + n] == 1 + 3 n ... [pattern-matching]
asked by faceclean https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=52526 Score
of 11 answered by eldo https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=14254
Score of 7 What's the difference between With and ReplaceAll? https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=298319
A wolfram Tutorial mentions that ReplaceAll and With are similar: The way ... [replacement] [pattern-matching] [core-language] [scoping]
asked by ions me https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=62529 Score of 9 answered by Sjoerd Smit https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=43522
Score of 11 Why can't I use logic operator Or to specify multiple events with WhenEvent?
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=298307
I want to use logic operator Or to specify multiple events. After reading these very helpful posts here and here, it seems to be better to use a function to inlude ... [differential-equations] [event-detection]
asked by xinxin guo https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4756 Score
of 8 answered by xzczd https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1871
Score of 7 Ordering with repeats https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=298186
A quick question on list ordering, how can I easily get the ordering of the list, so that, for {0, Sqrt[3], 2 Sqrt[3], Sqrt[3], 3, 2 Sqrt[3]} I get ... [list-manipulation] [sorting] [order]
asked by sam wolfe https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=64001 Score
of 8 answered by eldo https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=14254
Score of 6 How to "factor out" units? https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=298418
I have a huge expression that makes use of Mathematica's units support ( Quantity[] ) that I know evaluates to a dimensionless quantity. However, I'm unable to get <... [simplifying-expressions] [units]
asked by https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=96738 Score of 7 answered by creidhne https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=41569
Score of 6 Getting formulas like $E[\operatorname Tr (A^3 (A^T)^3]=n^4+10n^2+4n$
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=298260
Suppose $A$ is an random $n\times n$ matrix with standard normal entries. A user was able to obtain the following formula by enumerating all diagrams by hand: $$E[\operatorname{Tr}(A^3 (A^T)^3]=n^4+... [probability-or-statistics] [algebraic-manipulation]
asked by Yaroslav Bulatov https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=217 Score
of 7 answered by Bob Hanlon https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9362
Score of 8