How to derive the unit of the product of two quantities?

[giacomociti]

Maybe I'm missing something fundamental here, but I expected a way to derive from, say, 2 m/sec and 3 sec, that their product is 6m.
Using dimension vectors I can derive the quantity kind of the product, but there are many applicable units

[jhodgesatmb]

This is a very common/ubiquitous operation performed on most any equation in the physical sciences, but it is an extension of QUDT. We have developed a few applications of this kind over time but they have all been experiments rather than being part of the release.Jack Hodges, Ph.D.Arbor StudiosOn Nov 26, 2024, at 6:38 AM, Giacomo Citi ***@***.***> wrote: Maybe I'm missing something fundamental here, but I expected a way to derive from, say, 2 m/sec and 3 sec, that their product is 6m. Using dimension vectors I can derive the quantity kind of the product, but there are many applicable units —Reply to this email directly, view it on GitHub, or unsubscribe.You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[fkleedorfer]

You can do these kinds of calculations using

• https://github.com/occamsystems/occam-qudt
• https://github.com/qudtlib/qudtlib-java
• https://github.com/qudtlib/qudtlib-js

However, not each one of them is equally suited. For what you are looking for, try the first one first.

[Rdataflow]

you may simply go with a query adding up and filtering for the matching dimension vector
i.e. https://qlever.cs.uni-freiburg.de/lindas/6wpQVJ
btw: Newton meter = Joule = Watt seconds

[giacomociti]

thanks for the answers and the pointers. I was looking for a SPARQL solution, so I built upon @Rdataflow suggestion and this is the best I could do: https://qlever.cs.uni-freiburg.de/lindas/jUdDLz

[Rdataflow]

@giacomociti it feels a bit hacky but I can propose a possible solution:
https://qlever.cs.uni-freiburg.de/lindas/eTQvRt 😎