Finite Element Methods for Maxwell's Equations
《Finite Element Methods for Maxwell's Equations》 · 第 89 页 · Section 7.1「General Upper-Bound Results」
A powerful and elegant method for an upper-bound sieve originated with Atle Selberg. Selberg’s method yields results of great generality; it is simpler than combinatorial sieves at the outset, although equally complex in its advanced forms.