D R HARTREE (39 Ergebnisse)

Hardcover. Zustand: Good. Oxford at the Clarendon Press, 1952. Hardcover. Good. No dust jacket.

Zustand: Good. 1958. Second Edition. 302 pages. Illustrated dust jacket over blue cloth boards. Gilt lettering. Ex-Library copy, with expected inserts, stamps and inscriptions. Clean pages with light tanning and mild foxing throughout. More pronounced to free endpapers and pastedowns. Pen inscription to front free endpaper. Binding remains firm. Boards have mild edge-wear with slight rubbing to surfaces and bumping to corners. Gilt lettering is bright and clear. Minor wear marks to boards. Unclipped jacket. Panels and spine have light edgewear with tears and creases. Moderate tape repairs to interior jacket. Moderate tanning and wear marks to flaps, panels and spine.

Hardcover. Zustand: Very Good. Second edition of a great classic. 302pp. Cloth. Near-fine copy.

Zustand: Good. Light wear to boards. Content is clean with light age tone. Owner name to end paper. DJ with some edge wear, toning and creasing.

Hardcover. Zustand: Good. Zustand des Schutzumschlags: Good. 1st Edition. First edition, first impression. xx, 526pp, with calculations and figures in text. Orange cloth-covered boards, gilt lettering on black relief on spine. 8vo. Cloth a little rounded at spine ends, bumped on the lower leading corner. Some dustiness and toning to text block edges. Previous owner's name neatly inked on the front free endpaper else internally neat, clean and tight. In its original worn dust wrapper, rubbed, bumped and scuffed at edges, shelf worn, mildly toned around edges.

Zustand: Poor. This is an ex-library book and may have the usual library/used-book markings inside.This book has hardback covers. In poor condition, suitable as a reading copy. No dust jacket. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,1000grams, ISBN:

1st. Edn. pp. xiv, 287. A very good plus hardback copy in the original dark blue cloth. No wrapper.

Hardcover. Zustand: Good. No Jacket. Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less.

Softcover. Zustand: very good. Time-Lag in a Control System: "It often happens in physical experiments and in technical processes that there is some physical quantity, subject to random disturbances, which it is required to keep as nearly constant as possible by the operation of some controlling gear. For example, it may be required to keep a room, or a reaction vessel, at a constant temperature by controlling the electric current passing through a heating coil, or steam passing through heating pipes, or the operation of a heating or cooling engine. The operation of the controlling gear could be by trial and error, but it may often be desirable that it shall be made to depend in some definite way on the behaviour of the physical quantity to be controlled (controlling gear); and the apparatus employed (control apparatus). The two together comprise the Control System." No. 756. Volume 235. pp. 415-444. Co-authored by: A. Callender of the Research Department, I.C.I (Alkali) Limited, D.R. Hartree, F.R.S. and A. Porter of the University of Manchester. Darkening around the edges. 9" - 12". Book.

Hardcover. Zustand: As New. Oxford at the Clarendon Press, 1958. No dust jacket. Clean, unmarked copy. Binding tight. Former owner?s name on endpaper (George R. Anderson). From the library of Prof. Roger Stuewer, historian of physics, UMN. Due to size or weight, this item may require additional postage for international or priority shipping.

Zustand: Good. London 1939. Offprint from the Philosophical Transactions of the Royal Society of London. Series A, No. 790, Vol. 238. Lg.4to., pp.229-247, wraps. Good plus, light wear, no owner marks.

Zustand: Good. This is an ex-library book and may have the usual library/used-book markings inside.This book has hardback covers. In good all round condition. No dust jacket. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,600grams, ISBN:

First Edition,. 287 Seiten, Sprache: Englisch Gewicht in Gramm: 760 Groß 8°, Original-Leinen (Hardcover), Bibliotheks-Exemplar (ordnungsgemäß entwidmet) mit leichten Kleberückständen vom Rückenschild, Stempel auf Titel, Einband leicht lichtrandig und minimal fleckig, insgesamt gutes und innen sauberes Exemplar,

Zustand: Good. This is an ex-library book and may have the usual library/used-book markings inside.This book has hardback covers. In good all round condition. No dust jacket. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,550grams, ISBN:

Hardcover. Zustand: Near Fine. Zustand des Schutzumschlags: Good. New impression. 287pp. Pages lightly age-toned, owner's name penned on front fly, very good in a good only price-clipped dustwrapper with short nicks on edges, lightly age-toned.

Zustand: Fair. This is an ex-library book and may have the usual library/used-book markings inside.This book has hardback covers. In fair condition, suitable as a study copy. No dust jacket. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,950grams, ISBN:

Cloth. Zustand: Very Good. No Jacket. First Edition. Hardback. First Edition. Numerical Analysis. Previous owners name to inside cover. Small repair to top edge of spine. Corners slightly worn. Browning to spine. Blue coth with gilt lettering. Contents: Introduction. The Tools of Numerical Work and How to Use Them. Evaluation of Formulae. Finite Differences. Interpolation. Integration (Quadrature) and Differentiation. Integration of Ordinary Differential Equations. Stimulataneous Linear Algebraic Equations and Matrices. Non-Linear Algebraic Equations. Functions of Two or More Variables. Miscellaneous Processes. Organization of Calculations For an Automatic Machine. Examples. Bibliography. Index. 287 pp. (We carry a wide selection of titles in The Arts, Theology, History, Politics, Social and Physical Sciences. academic and scholarly books and Modern First Editions, Reference books ,and all types of Academic Literature.).

Zustand: Good. This is an ex-library book and may have the usual library/used-book markings inside.This book has hardback covers. In good all round condition. No dust jacket. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,400grams, ISBN:

Zustand: Good. Manchester 1936 first edition. Memoirs and Proceedings of Manchester Literary & Philosophical Society 1935-36. Original pale blue printed wraps. octavo. Hartree article on pp. 85-102. Hartree's work in numerical analysis contributed to development of calculators and computers. Good, cover somewhat worn, frayed and chipped on cover edges; text near Fine, clean and bright. Institute stamp on cover. no other ownership marks.

Hardcover. Zustand: Near Fine. Zustand des Schutzumschlags: Near Fine. 1st Edition. First Edition. xiv, 287, [1] pp; 31 figs. Original cloth, 8vo. Upper corner of front cover bumped. Signature on pastedown. Else Very Good+, in very good dust jacket (unclipped). "Hartree's chief contribution to science was his development of powerful methods of numerical mathematical analysis, which made it possible for him to apply successfully the so-called self-consistent field method to the calculation of atomic wave functions of polyelectronic atoms, that is, those which in the neutral condition have more than one electron surrounding the nucleus. These calculations involved the numerical solution of the partial differential equations of quantum mechanics for many-body systems subject to the usual boundary conditions" (D. S. B. 6: 147). Chapter 12 is "Organization of Calculations for an Automatic Machine" (pp. 255-273).

Hardcover. Zustand: Near Fine. Zustand des Schutzumschlags: Very Good. 1st Edition. Cloth, 8vo. 1st edition. 287 pp. Blue boards with gilt at spine. Minor wear to DJ corners & edges. storage.

First edition. Small 8vo. pp. 40; 2 photo. illusts. of ENIAC; very good in original printed wrappers, a little marked, ownership inscription of D. W. Sciama to front wrapper. Hartree's overview of the subject includes his work at the University of Pennsylvania on ENIAC, the first programmable digital computer. This copy belonged to Dennis W. Sciama (1926-99), author of Modern Cosmology (1971), who studied at Cambridge and Oxford, where his students included Stephen Hawking, Martin Rees, and John Barrow.

Hardcover. Zustand: Very Good. Zustand des Schutzumschlags: Very Good. 1st Edition. 8vo. Orig. blue cloth. viii, 229 pp. Spine tilted and sunned, faded at ends. Light damp staining to boards. Edge toning to interior. Ink ownership inscription to ffep. Dust jacket age toned, lightly chipped to extremities, pencil scribble to rear cover.

Hardcover. Zustand: Good. No Jacket. 1st UK Edition. 287 pages in good condition. Pages are clean and unmarked. EX-LIBRARY with the usual stamps on the endpapers. Front paste-down endpaper is scuffed around the edges. Page edges are lightly darkened and smudged. Bound in blue cloth with gilt titles on the spine. Faded on the spine. Label on the spine. Boards are scuffed. Lightly worn and faded around the edges with some tears on the head of the spine. A couple of puncture holes along the edge of the spine. 1ST UK EDITION. G/- - Size: 6 1/2 x 9 1/2. Ex-Library.

J Inst Electrical Engineers vol 95 1947 pp. 225-6. .Extract, modern wraps.Short but early item from pioneer.DW. Book.

The Computer Bulletin vol 1 1958 pp. 136-141. Entire number 4 for January, original printed wraps vg.DW. Book.

Hard Cover. Zustand: Very Good. No Jacket. Second Edition. BOOK: Boards Bumped; Edges Lightly Soiled; Moderate Yellowing Due to Age. DUST JACKET: Missing. CONTENTS: Chapter I. Introduction; Chapter II. The Tools of Numerical Work and How to Use Them; Chapter III. Evaluation of Formulae; Chapter IV. Finite Differences; Chapter V. Interpolation; Chapter VI. Integration (Quadrature) and Differentiation; Chapter VII. Integration of Ordinary Differential Equations; Chapter VIII. Simultaneous Linear Algebraic Equations and Matrices; Chapter IX. Non-Linear Algebraic Equations; Chapter X. Functions of two or More Variables; Chapter XI. Miscellaneous Processes; Chapter XII. Organization of Calculations for an Automatic Machine; Examples; Bibliography; Index. EXCERPT: PREFACE TO THE SECOND EDITION - In revising the text of this book for a second edition, it has been my intention to preserve its character as an introduction to numerical analysis for those who want to know about numerical methods for the purpose of applying them in practice, when actual numbers take the place of the literal symbols of an algebraic formula. The main change from the first edition is in Chapter VII on the numerical integration of differential equations, which has been largely rearranged and somewhat extended, particularly in the treatment of equations with two-point boundary conditions. I have also included a section on Whittaker's 'cardinal function' in the theory of interpolation, and an account of a method, due to Wilkes, of handling the Choleski method of matrix factorization which, in my view, converts this from a method for specialists (as it seemed to me when the first edition was written) to a practicable method for the occasional user. The treatment of quadrature formulae of the Gauss type has been extended, and a number of other sections have been added or revised . . . Size: 8vo - over 7¾" - 9¾" tall.

First Edition. xiv, 287, [1] pp; 31 figs. Original cloth, 8vo. Boards slightly bowed, else Very Good to Near Fine, without dust jacket. "Hartree's chief contribution to science was his development of powerful methods of numerical mathematical analysis, which made it possible for him to apply successfully the so-called self-consistent field method to the calculation of atomic wave functions of polyelectronic atoms, that is, those which in the neutral condition have more than one electron surrounding the nucleus. These calculations involved the numerical solution of the partial differential equations of quantum mechanics for many-body systems subject to the usual boundary conditions" (D. S. B. 6: 147). Chapter 12 is "Organization of Calculations for an Automatic Machine" (pp. 255-273).

Hardcover. Zustand: Near Fine. Zustand des Schutzumschlags: Near Fine. 2nd edition. Narrow 4to. xiv + 267+ (1)pp. Publisher's plain blue cloth covers, gilt lettering + Publisher's cartouche on spine. Pale printed dw, blue lettering, price clipped. Original white eps. Covers : very slight 0.1cm shelf knock bottom corner of spine+ rear edge. Dw : tiny chip top of spine, light crimp along front top edge, rubs top corners else clean. Contents : slight browning to eps else very clean, tight & unfoxed. Clean tight copy. VG+/VG+.

Second Edition.8°. XVI, 302 S. Orig.-Leinen. Stempel auf Innendeckel.