hartree d r (40 résultats)

Hardcover. Etat : Very Good. No Jacket. Missing dust jacket; May have limited writing in cover pages. Pages are unmarked. ~ ThriftBooks: Read More, Spend Less 1.38.

Etat : 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:

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

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,

Etat : 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.

Softcover. Etat : 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. Etat : 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.

Hardcover. Etat : Good. No Jacket. Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less 1.9.

Etat : 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.

Etat : 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:

Etat : 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. Etat : Near Fine. Etat de la jaquette : 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.

Etat : 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. Etat : 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.).

Etat : 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:

Hardcover. Etat : UsedGood. Hardcover, 2nd edition; surplus library copy with the usual stampings; reference number written on spine; type faded on spine; bar code on back cover; fading and shelf wear to exterior; book plate inside front board; otherwise in good condition with clean text, firm binding.

Etat : 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.

Etat : Fair. Manchester 1933 first edition. Memoirs and Proceedings of Manchester Literary & Philosophical Society 1932-33. Original pale blue printed wraps. octavo. Hartree articles on pp. 69-90 and 91-107. Hartree's work in numberical analysis contributed to development of calculators and computers. Cover Fair, creased and worn with light chipping; text near Fine, clean and bright. Institute stamp on cover. no other ownership marks.

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

Hardcover. Etat : UsedGood. Hardback; light edge wear, fading to cover; fading to page edge; former owner's name written inside rear board; otherwise in good condition with clean text, tight binding.

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.

Hardcover. Etat : Very Good. Etat de la jaquette : 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. Etat : Good. Etat de la jaquette : Very Good. 2nd Edition.

Hardcover. Etat : 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.

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. Etat : Near Fine. Etat de la jaquette : 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+.