It is pricey.

That's the problem :))

I have the same issue with another textbook on electromagnetic waves!

Good books are pricey, makes sense!

OOpps, the wrong room

I am so sorry my friends.

I usually click on the first chat room on the left, it was always the language over flow chat room, I just realized I am in the wrong room.

live!

I was surprised to notice that in CHEM.SE tags which would seem to be automatic like "alkene" or "alkane" or "conformation" -- were not tags. Surprising there is a tag for "cyclohexane" but this must be a very old tag

However, some other classes of chemicals like "alkali-metals" are tags

I have been worried about tagging all the different methods e.g. meta-gga because that introduces too many tags. But now I'm worried about all the different materials tags we are using. For example, we have "heavy elements" "spin-crossover complexes" (I made that tag), "one-dimension", "polymers", "solar cells", "defects", "structure", "biomaterials" ...

I think polymers, biomaterials are good. Structure is obviously bad, I'm unsure about the rest

Probably okay to remove a few but err on the side of leniency right now

However, there are also some strange tags like "thermal" "temperature", "integral" which should probably be removed

there are a few niche tags "quantum-monte-carlo", "non-orthogonal-ci", "extended-hueckel-method". while these are certainly discrete categories I'm not sure they require a tag. Again this is coming from how Chem.SE does not even have a tag for Alkanes and Alkenes -- presumably because they can generally fall under other tags without much worry

Finally, some tags feel a little too general "optimization" "coordination" "numerical-convergence" "convergence-test". Even "ab-initio" is probably a little too general considering that it's not clear what is meant by "ab-initio" and it's probably synonymous with other tags (e.g. wavefunctions, DFT, etc).

these are just some ideas, please don't attack me. Regular cleanup of the tags is important!