A method is presented for proving the existence and calculating lower bounds for critiml energies of the Hartrec equation for rhe helium atom. Our idea is to introduce an "energy" scalar product and use it to approximate the fourth order term in the potential by n smaller second order term. Rigorous
โฆ LIBER โฆ
The existence and nonexistence of critical points in bounded flows
โ Scribed by G.Stephen Jones; James A Yorke
- Publisher
- Elsevier Science
- Year
- 1969
- Tongue
- English
- Weight
- 484 KB
- Volume
- 6
- Category
- Article
- ISSN
- 0022-0396
No coin nor oath required. For personal study only.
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## Abstract Halin's Theorem characterizes those infinite connected graphs that have an embedding in the plane with no accumulation points, by exhibiting the list of excluded subgraphs. We generalize this by obtaining a similar characterization of which infinite connected graphs have an embedding in