vi_sextus_vi
Joined 7 months ago
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Comment · 4 months ago
Comment · 4 months ago
Typo. No "al-" prefix
Comment · 4 months ago
This is conventional DFT which is O(N^3)
Original paper, not a single equation:
https://web.archive.org/web/20240129185108/https://www.owlne...
The N^3 is further reduced by high symmetry. Because structure relaxations are usually convergent, the 2007 DFT and MD calculations can be run on a regular laptop today, maybe even without a GPU!
The discrepancy has been exaggerated by the experimentalist, TFA quotes the original theorist. This is not the first time, and probably not the last time, that c&en has oversold an experimental result.
Comment · 4 months ago
Some have noticed. My top example. "solidstate protein synthesis". Interest should asymptotically approach that in orgo since boron makes any cooking more fun,just like butter (garam bleng for the vegans, sorry)
https://www.sigmaaldrich.com/SG/en/technical-documents/techn...
Remarkably pleasant to work with, unlike the class of compounds which include
https://en.wikipedia.org/wiki/Zip_fuel
And
Merlin's TEA-TEB
Easter egg:
At least one town https://en.wikipedia.org/wiki/Boron,_California
(Carbon has too many)
Comment · 4 months ago
this boronic thing (negative ion, really) they _might have seen_ has 241 (valence) electrons..
You'd expect a nice 240 given the symmetry, not a prime number
Or maybe a less baity reason is those hints of B_80^- have captured H+ "nuclei", turning into almolecular atoms!
Not oxyboronic at all
Comment · 4 months ago
>[theorists disagree] that the discrepancy is as significant as it appears.
It was predicted by decade old "theory" (with a single equation,and it seems that the original paper has no equations at all)
so OAI/DeepMind can quietly check if it's in the training or if they can extrapolate, yes
https://arxiv.org/abs/0803.2752
https://cen.acs.org/articles/85/i18/Boron-buckyball-predicte...
Comment · 4 months ago
Not all.
It is only exciting for these theorists who predicted it. They can now hardly wait for a proper synthesis?
https://cen.acs.org/articles/85/i18/Boron-buckyball-predicte...
Comment · 4 months ago
Nobel for Seeman and Guo!
Comment · 5 months ago
This crystallised a take.
Unsolved Erdosh problems were touted as a cheap way to generate new perspectives. outcome has been slightly disappointing. overlooked frameworks were all that has been needed so far. not new ones. Could change as LLMs are pointed at other kinds of inexplicables
https://golem.ph.utexas.edu/category/2013/06/torsors_and_enr...
Consider in particular that use of ‘distance’
>I think you can look at adjoint profunctors from the unit category and show that they consist of giving a consistent ‘distance’ to every object, which in a torsor will be represented.