Schauder, JP (English spelling) SchauderJP

Japanese: Schauder,J.P.(英語表記)SchauderJP
Schauder, JP (English spelling) SchauderJP

...G.D. Birkhoff and OD Kellogg (1878-1932) used this idea to prove the existence of solutions to differential equations as fixed point theorems for (not necessarily linear) completely continuous operators in Banach spaces. This idea was extended to the proof of the existence of solutions to partial differential equations by JP Schauder (1899-1943), J. Leray (1906- ), and others.
[Semigroups of linear operators]
If there is a family of bounded linear operators { T t | t ≧0} from a Banach space X to X , and (a) T t T s = T t + s (semigroup property), (b) T 0 = I (identity operator), (c) for every xX (continuity), then { T t | t ≧0} is called a one-parameter semigroup, or simply a semigroup. …

*Some of the terminology that mentions "Schauder, JP" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…この考えによりG.D.バーコフとケロッグO.D.Kellog(1878‐1932)は,微分方程式の解の存在を,バナッハ空間における(必ずしも線形でない)完全連続作用素の不動点定理として証明した。このような考え方は,シャウダーJ.P.Schauder(1899‐1943),ルレーJ.Leray(1906‐ )らによって,偏微分方程式の解の存在証明にも拡張された。
[線形作用素の半群]
 バナッハ空間XからXへの有界線形作用素の族{Ttt≧0}があって,(a)TtTsTts(半群性),(b)T0I(恒等作用素),(c)任意のxXに対して(連続性)を満たすとき,{Ttt≧0}を1パラメーター半群または単に半群と呼ぶ。…

※「Schauder,J.P.」について言及している用語解説の一部を掲載しています。

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