Fejer E (17 results)

hardcover. Condition: Very Good. Most items will be dispatched the same or the next working day. A copy that has been read, but is in excellent condition. Pages are intact and not marred by notes or highlighting. The spine remains undamaged.

Condition: Very Good. Pages intact with possible writing/highlighting. Binding strong with minor wear. Dust jackets/supplements may not be included. Stock photo provided. Product includes identifying sticker. Better World Books: Buy Books. Do Good.

Condition: Good. New edition. Pages intact with minimal writing/highlighting. The binding may be loose and creased. Dust jackets/supplements are not included. Stock photo provided. Product includes identifying sticker. Better World Books: Buy Books. Do Good.

Condition: Very Good. Former library copy. Pages intact with possible writing/highlighting. Binding strong with minor wear. Dust jackets/supplements may not be included. Includes library markings. Stock photo provided. Product includes identifying sticker. Better World Books: Buy Books. Do Good.

Taschenbuch. Condition: Gut. 122 Seiten; Papierqualität und Alter führten zu einer Nachdunklung der Seiten und der Buchschnitt ist angestaubt. Im Übrigen ist das Taschenbuch in einem guten Zustand. Sprache: Deutsch Gewicht in Gramm: 150.

Condition: New.

Condition: Very Good. 1994. Hardcover. Text in Irish. Very good copy with light shelf wear. . . . .

Condition: New.

Condition: Very Good. 1994. Hardcover. Text in Irish. Very good copy with light shelf wear. . . . . Books ship from the US and Ireland.

Soft cover. Condition: Very Good. No Jacket. Illustrated card cover with fold-in sections. Excellent condition except for slight bumping to corners and light scratches to laminated surfaces, although these can only be seen from certain angles. Inside is clean throughout.

hardcover. Condition: Very Good. First Edition with PICTORIAL LAMINATED cloth - within 12 hours of receipt of order.

Condition: Gut. Deutsche Erstausgabe.. 122 S., Umschlag und Innenseiten leicht gebräunt. Einband vorn geknickt. // B,21 ISBN 3811886827 Sprache: Deutsch Gewicht in Gramm: 160 17 x 10 cm, Softcover/Paperback.

Couverture rigide. Condition: bon. R300088859: 1989. In-12. Relié. Bon état, Couv. convenable, Dos satisfaisant, Intérieur frais. 124 pages - nombreuses illustrations en couleurs dans le texte. . . . Classification Dewey : 549-Minéralogie.

Couverture rigide. Condition: bon. R320045875: 1989. In-12. Relié. Bon état, Couv. convenable, Dos satisfaisant, Intérieur frais. 124 pages - Nombreuses photos en couleurs in texte. . . . Classification Dewey : 549-Minéralogie.

8° Broschur. Condition: Gut. 126 ohne Schutzumschlag, geringe Gebrauchsspuren an Einband und Block, Block sauber und fest, Mängelexemplarstemel am Schnitt 138762 Sprache: Deutsch Gewicht in Gramm: 450.

(Paris, Gauthier-Villars), 1900. 4to. No wrappers. In: "Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences", Tome 131, No 24. Pp. (975-) 1017. (Entire issue offered). Fejér's (here spelled Téjer !) paper: pp. 984-987. Clean and fine. First printing of this importent paper in which Féjer states the "Summation Theorem" that bears his name."Fejér?s main works deal with harmonic analysis. His classic theorem on (C, 1) summability of trigonometric Fourier series (1900) not only gave a new direction to the theory of orthogonal expansions but also, through significant applications, became a starting point for the modern general theory of divergent series and singular integrals. Through a Tauberian theorem of G. H. Hardy?s the convergence theory of Fourier series was considerably affected by Fejér?s theorem as well" it is closely connected with Weierstrass? approximation theorems and with the more advanced theory of power series and harmonics (potential theory), and makes possible a number of analogues for related series, such as Laplace series."(DSB).…

Budapest 1966, 8°, 987 pp., 489 Abbildungen, 28 Tab., orig. Leinenband. Bearbeitet von E.Fejér, D.Oláh, S.Szathmári, L.Szodoray u. J.Uri.