A C Langford (21 results)

paperback. Condition: Very Good. We have 75,000 books to choose from -- Ship within 24 hours -- Satisfaction Guaranteed.

SingleIssueMagazine. Condition: Very Good+. Vol. 58, No. 2. Cover art by Jeff Easley for "A Lantern Maker of Ai Hanlo" by Darrell Schweitzer; "Linehan Alone" by Kevin O'Donnell, Jr.; "Through Space & Time with Ferdinand Feghoot y" by Grendel Briarton [R. Bretnor]; "Shaggy Vengeance" by Robert Adams; "The Distressing Damsel" by David Langford; "The Best Medicine" by Robert Morrell, Jr.; "Seasonal Special" by J. O. Jeppson; "Improbable Bestiary - The Elf" by F. Gwynplaine MacIntyre; "Some Are Born Great" by J. A. Lawrence. Departments: "Opinion" by Robert Silverberg; "Book Reviews" by Robert Coulson, Frank Catalano, Patrick L. Price, and Roger Raupp; "Discussions"; "The Observatory" by George H. Scithers. Fact: "Interview with Roger Zelazny" by Darrell Schweitzer; "The Leprechauns Are Alive and Well in Spite of the Evil Eye" by G. C. Edmondson. Illustrated by Tim Kirk, George Barr, Frank Borth, Jack Gaughan, and V. Lakey/ Artifact. Tanning; a little stress; rear cover creasing. No label, never was. Book. …

SingleIssueMagazine. Condition: Very Good+ to Near Fine. Vol. 58, No. 2. Cover art by Jeff Easley for "A Lantern Maker of Ai Hanlo" by Darrell Schweitzer; "Linehan Alone" by Kevin O'Donnell, Jr.; "Through Space & Time with Ferdinand Feghoot y" by Grendel Briarton [R. Bretnor]; "Shaggy Vengeance" by Robert Adams; "The Distressing Damsel" by David Langford; "The Best Medicine" by Robert Morrell, Jr.; "Seasonal Special" by J. O. Jeppson; "Improbable Bestiary - The Elf" by F. Gwynplaine MacIntyre; "Some Are Born Great" by J. A. Lawrence. Departments: "Opinion" by Robert Silverberg; "Book Reviews" by Robert Coulson, Frank Catalano, Patrick L. Price, and Roger Raupp; "Discussions"; "The Observatory" by George H. Scithers. Fact: "Interview with Roger Zelazny" by Darrell Schweitzer; "The Leprechauns Are Alive and Well in Spite of the Evil Eye" by G. C. Edmondson. Illustrated by Tim Kirk, George Barr, Frank Borth, Jack Gaughan, and V. Lakey/ Artifact. Mild tanning, minor creasing and rubbing. Book.…

Condition: Good. This is an ex-library book and may have the usual library/used-book markings inside.This book has soft covers. Clean from markings. In good all round condition. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,800grams, ISBN:9780071814843. …

Condition: Good. Good condition. Good dust cover. (History, Wallpaper, Textile, Design) A copy that has been read but remains intact. May contain markings such as bookplates, stamps, limited notes and highlighting, or a few light stains.

Condition: New.

Condition: As New. Unread book in perfect condition.

Condition: New.

Paperback. Condition: Brand New. 8.27x0.28x8.27 inches. In Stock.

Condition: As New. Unread book in perfect condition.

First Edition. Very good cloth copy in a very good edge-nicked and dust-dulled dust-wrapper. Remains quite well-preserved overall. Physical description; xvii, 319 pages, 45 unnumbered pages of plates : plates, portraits, facsimiles, genealogical tables ; 26 cm. Subjects; Insurance companies. Biography. Bignold family. Fire Insurance Society Firm. 1 Kg. …

Kartoniert / Broschiert. Condition: New.

Paperback. Condition: Brand New. 527 pages. 8.75x6.00x1.00 inches. In Stock.

Gebunden. Condition: New.

Hardcover. Condition: Brand New. 494 pages. 9.25x6.25x1.50 inches. In Stock.

Paperback. Condition: Brand New. 8.27x1.97x8.27 inches. In Stock.

Grey Wrappers. Condition: Near Fine. First Edition. Volume 9 No 1, 32 Pp. Scarce In This, The Original Publication State Of Gray Printed Wrappers. Near Fine. Contains Rozsa's Reviews (In German) Of Articles By Skolem, Psposil, Suranyi, And Of Two Articles By Laszlo Klmar. Rózsa Péter, Born Rózsa Politzer, (1905 - 1977) Was A Hungarian Mathematician And Logician. She Is Best Known As The "Founding Mother Of Recursion Theory". Initially, Péter Began Her Graduate Research On Number Theory. Upon Discovering That Her Results Had Already Been Proven By The Work Of Robert Carmichael And L. E. Dickson, She Abandoned Mathematics To Focus On Poetry. However, She Was Convinced To Return To Mathematics By Her Friend László Kalmár, Who Suggested She Research The Work Of Kurt Gödel On The Theory Of Incompleteness.[3] She Prepared Her Own, Different Proofs To Gödel's Work. Péter Presented The Results Of Her Paper On Recursive Theory, "Rekursive Funktionen," To The International Congress Of Mathematicians In Zurich, Switzerland In 1932. For Her Research, She Received Her Phd Summa Cum Laude In 1935. In 1936, She Presented A Paper Entitled "Über Rekursive Funktionen Der Zweiten Stufe" To The International Congress Of Mathematicians In Oslo.[3] These Papers Helped To Found The Modern Field Of Recursive Function Theory As A Separate Area Of Mathematical Research. In 1937, She Was Appointed As Contributing Editor Of The Journal Of Symbolic Logic. After The Passage Of The Jewish Laws Of 1939 In Hungary, Péter Was Forbidden To Teach Because Of Her Jewish Origin And Was Briefly Confined To A Ghetto In Budapest. During World War Ii, She Wrote Her Book Playing With Infinity: Mathematical Explorations And Excursions, A Work For Lay Readers On The Topics Of Number Theory And Logic. In 1952, She Was The First Hungarian Woman To Be Made An Academic Doctor Of Mathematics. After The College Closed In 1955, She Taught At Eötvös Loránd University Until Her Retirement In 1975. She Was A Popular Professor, Known As "Aunt Rózsa" To Her Students. In 1951, She Published Her Key Work, Recursive Functions (Rekursive Funtionen). She Continued To Publish Important Papers On Recursive Theory Throughout Her Life. Beginning In The Mid-1950S, Péter Applied Recursive Function Theory To Computers. Her Final Book, Published In 1976, Was Recursive Functions In Computer Theory. Originally Published In Hungarian, It Was The Second Hungarian Mathematical Book To Be Published In The Soviet Union Because Its Subject Matter Was Considered Indispensable To The Theory Of Computers. It Was Translated Into English In 1981.Péter Was Awarded The Kossuth Prize In 1951. She Received The Manó Beke Prize By The János Bolyai Mathematical Society In 1953, The Silver State Prize In 1970, And The Gold State Prize In 1973. In 1973, She Became The First Woman To Be Elected To The Hungarian Academy Of Sciences.…

Grey-blue Wrappers. Condition: Near Fine. First Edition. 293 Individual Volumes In Original Wrappers, Not Library Re-Binds. Foundational Material In The Development Of Modern Logic, Mathematical Analysis, And, Ultimately, The Mathematics Enabling Computers And Computer Programming And Artificial Intelligence. Some Wrappers With Minor Yellowing, Primarily To Spines, A Few Early Issues With Splits To Spines, Very Good To Fine. Ownership Signatures Of A Noted Mathematician On Some Issues. Early Issues With Issue Numbers And Dates Inked On Spines. Lacking Vol. 21 No. 3, Vol. 46 No. 2, Vol. 62 No. 1, Vol. 64 No. 1, Vol. 70 No. 3. " . The Extant Gains Registered By The Modern Symbolic Treatment Of Logic Have Become Such An Essential Factorin Making Pronouncements Regarding The History Of Logic That We Are Constrained To Say That An Essential Knowledge Of Symbolic Logic Have Become An Indispensable Condition For Any And All Fruitful Study Of The History Of Logic" [Heinrich Scholz,"Concise History Of Logic"). As It Is Impossible To Show That The Cause And Effect Of Any Physical Event Can Be Isolated Sufficiently To Make The Effects Of Forces Susceptible To A Complete Logical Analysis, The Connection Of Physical Science And Logic Remains Tangential And Tenuous. The Impossibility Of Exactly Physically Limiting Definition Of Sources And Effects Of Forces In Social Science Make Law, Economics And Politics Ridiculous, And The Rest Of Social Science Merely Entertaining. The Scientific Use Of Logic Is Limited To It's Use In Occam's Razor, The Endless Process Of Successive Removal Of Improper Statements, Relationships, And Associations In Statements About The Physical World, And The Refinement Of Unscientific Arguments In The Imaginary World To Make Them More Acceptable To Contemporary Sensibilities.…

Hardcover. Condition: Very Good. No date, [ 1870] bound in 4 volumes, 12" x10 ", 352pp, 352pp, 352pp, 352pp, lacking most illustrations, bound in crimson cloth/gilt edges bit rubbed, spines sunned, spine edges and inner hinges chipped, bit shaken; Quarto.

Condition: New.

16 Autograph Letters Signed, 10 Autograph Cards Signed and one Typed Letter Signed. The letters total 32pp. The collection is in fair condition, on aged and worn paper. The correspondence deals exclusively with mathematical questions raised in the Mathematical Gazette, with the writers providing mathematical calculations and demonstrations. From six individuals, as follows. ONE: T.A.A. Broadbent [ Thomas Arthur Alan Broadbent ] (1903-1973) of the Royal Naval College, Greenwich: 4 ALsS and 3 ACsS. TWO: G.A. Garreau [ Gabriel Armand Garreau ]: 2 ALsS and one TLS. THREE: C. Dudley Langford (see 'Langford's Problem') of Henrietta Cottage, 16 Henrietta Street, Girvan, Ayrshire: 2 ALsS and 2 ACsS. FOUR: T.B.W. Spencer (author of 'Mathematical Problem Papers') of 35 The Downs, Wimbledon: one ALS. FIVE: A.S. Gosset Tanner [ Arthur Spencer Gosset-Tanner ], master at Derby School: 5 ACsS and 2 ALsS. SIX: J. Travers, Headmaster, Peterborough College, Harrow: 5 ALsS. Also present is a Typed Letter Signed by 'Ripley' (i.e. on behalf of Robert Ripley's American franchise), on letterhead of the Sunday Express, 3 January 1940: 'Your interesting problem of the three numbers has been noted, and will be included in "Believe it or Not" at an early date.' From the Harington family papers, the recipient being Sir Richard Dundas Harington, 13th Baronet (1900-1981), whose address is given as The Brook, Lower Howsell, Malvern Link, Worcestershire.…