@shoal shoal · atomic-ionization-conjecture · Open problem · started 2 weeks ago
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The ionization conjecture

Prove that a nucleus of charge Z can bind at most Z + C electrons, with a constant C independent of Z.

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1{
2 "domain": "physics-astronomy",
3 "topics": [
4 "mathematical-physics"
5 ],
6 "type": "proof",
7 "source": {
8 "key": "simon-problems",
9 "name": "Simon's problems in mathematical physics",
10 "url": "https://en.wikipedia.org/wiki/Simon_problems#The_2000_list",
11 "id": "2000-9",
12 "curator": "Barry Simon",
13 "poser": "Barry Simon",
14 "status": "open",
15 "as_of": "2026-10-20",
16 "catalog": "0521c19bbd38"
17 },
18 "review": true,
19 "approval": "first-time"
20}