Let Q be a nonsingular quadric surface bearing reguli Af and Af, and let **zg be a Af curve of order K on Q.

The class of the congruence is Af, since an arbitrary plane meets **zg in K points.

Since the complex of singular lines is of order K and since there is no complex of invariant lines, it follows from the formula Af that the order of the involution is Af.

Since C is rational, this correspondence has K coincidences, each of which implies a line of the pencil which meets its image.

For if such were the case, either the plane of the two lines would meet **zg in more than K points or, alternatively, the order of the image regulus of the pencil determined by the two lines would be too high.

The K factor, a term used to denote the rate of heat transmission through a material ( B.t.u./sq. ft. of material/hr./*0F./in. of thickness ) ranges from 0.24 to 0.28 for flexible urethane foams and from 0.12 to 0.16 for rigid urethane foams, depending upon the formulation, density, cell size, and nature of blowing agents used.

Table 1,, p. 394, shows a comparison of K factor ratings of a number of commercial insulating materials in common use, including two different types of rigid urethane foam.

The man most firmly at grips with the problem is the University of Minnesota's Physiologist Ancel Keys, 57, inventor of the wartime K ( for Keys ) ration and author of last year's bestselling Eat Well And Stay Well.

* in J. Barnes, M. Schofield, and R. R. K. Sorabji, eds .( 1975 ).

* Pfeiff, K. A., 1943.

The equilibrium constant K is an expression of the equilibrium concentrations of the molecules or the ions in solution.

The acid dissociation constant K < sub > a </ sub > is generally used in the context of acid-base reactions.

The stronger of two acids will have a higher K < sub > a </ sub > than the weaker acid ; the ratio of hydrogen ions to acid will be higher for the stronger acid as the stronger acid has a greater tendency to lose its proton.

Charles K. Smith argues that Swift ’ s rhetorical style persuades the reader to detest the speaker and pity the Irish.

To do this, Moseley measured the wavelengths of the innermost photon transitions ( K and L lines ) produced by the elements from aluminum ( Z = 13 ) to gold ( Z = 79 ) used as a series of movable anodic targets inside an x-ray tube.

Maj. Gen. Polk ignored the problems of Fort Henry and Fort Donelson when he took command and, after Johnston took command, at first refused to comply with Johnston's order to send an engineer, Lt. Joseph K. Dixon, to inspect the forts.

* McCone, K. R.

*“ An Mhanainnis ”, in K. McCone, Damian McManus, Cathal Ó Hainle, Nicholas Williams, Liam Breatnach, Stair na Gaeilge ( Maynooth, 1994 ) 703 – 44

In 1768, when court intrigue prevented the performance of La Finta Semplice ( K. 51 ) for which a twelve-year-old Wolfgang Amadeus Mozart had composed 500 pages of music, Mesmer is said to have arranged a performance in his garden of Mozart's Bastien und Bastienne ( K. 50 ), a one-act opera, though Mozart's biographer Nissen has stated that there is no proof that this performance actually took place.

Depictions include " Freyr und Gerda ; Skade und Niurd " ( drawing, 1883 ) by K. Ehrenberg, " Njörðr " ( 1893 ) by Carl Frederick von Saltza, " Skadi " ( 1901 ) by E. Doepler d. J., and " Njörd's desire of the Sea " ( 1908 ) by W. G. Collingwood.

The scene of Sigyn assisting Loki has been depicted on a number of paintings, including " Loke och Sigyn " ( 1850 ) by Nils Blommér, " Loke och Sigyn " ( 1863 ) by Mårten Eskil Winge, " Loki och Sigyn ( 1879 ) by Oscar Wergeland, and the illustration " Loki und Sigyn ; Hel mit dem Hunde Garm " ( 1883 ) by K. Ehrenberg.

Modern works of art depicting Skaði include Skadi und Niurd ( illustration, 1883 ) by K. Ehrenberg and Skadi ( 1901 ) by E. Doepler d. J. Skaði also appears in A. Oehlenschläger's poem ( 1819 ) Skades Giftermaal.

Works of art depicting valkyries include " Die Walküren " ( sketch, 1818 ) by J. G. Sandberg, " Reitende Walküre " ( fresco ), previously located in Munich palace but now destroyed, 1865 / 1866 by M. Echter, " Valkyrien " and " Valkyriens død " ( paintings, both from 1860 ), " Walkürenritt " ( etching, 1871 ) by A. Welti, " Walkürenritt " ( woodcut, 1871 ) by T. Pixis, " Walkürenritt " ( 1872 ) by A. Becker ( reproduced in 1873 with the same title by A. v. Heyde ), " Die Walkyren " ( charcoal, 1880 ) and " Walkyren wählen und wecken die gefallenen Helden ( Einherier ), um sie vom Schlachtfield nach Walhall zu geleiten " ( painting, 1882 ) and " Walkyrenschlacht " ( oil painting, 1884 ) by K. Ehrenberg, " Walkürenritt " ( oil painting, 1888, and etching, 1890 ) by A. Welti, " Walküre " ( statue ) by H. Günther, " Walkürenritt " ( oil painting ) by H. Hendrich, " Walkürenritt " ( painting ) by F. Leeke, " Einherier " ( painting, from around 1900 ), by K. Dielitz, " The Ride of the Valkyries " ( painting, from around 1900 ) by J. C. Dollman, " Valkyrie " ( statue, 1910 ) and " Walhalla-freeze " ( located in the Ny Carlsberg Glyptotek, Copenhagen, 1886 / 1887 ), " Walkyrien " ( print, 1915 ) by A. Kolb, and " Valkyrier " ( drawing, 1925 ) by E. Hansen.

von K. Lee Lerner und Brenda Wilmoth Lerner, 3 Bände, Detroit: Gale, 2004

B. Diel and William Kreiten, Klemens Brentano ( 2 vols, 1877 – 1878 ), the introduction to Koch's edition, and R. Steig, A. von Arnim und K. Brentano ( 1894 ).

These depictions include " Idun " ( statue, 1821 ) by H. E. Freund, " Idun " ( statue, 1843 ) and " Idun som bortrövas av jätten Tjasse i örnhamn " ( plaster statue, 1856 ) by C. G. Qvarnström, " Brage sittande vid harpan, Idun stående bakom honom " ( 1846 ) by Nils Blommér, " Iduns Rückkehr nach Valhalla " by C. Hansen ( resulting in an 1862 woodcut modeled on the painting by C. Hammer ), " Bragi und Idun, Balder und Nanna " ( drawing, 1882 ) by K. Ehrenberg, " Idun and the Apples " ( 1890 ) by J. Doyle Penrose, " Brita as Iduna " ( 1901 ) by Carl Larsson, " Loki och Idun " ( 1911 ) by John Bauer, " Idun " ( watercolor, 1905 ) by B. E. Ward, and " Idun " ( 1901 ) by E. Doepler.

* Sprengel, C K. Das entdeckte Geheimnis der Natur im Bau und in der Befruchtung der Blumen.

* Mannheim, K. ( 1929 ), Ideologie und Utopie

** K. R. Hagenbach, Johann Oecolampad und Oswald Myconius, die Reformatoren Basels ( 1859 )

Aug. Lobeck und K. Lehrs ( 1894 ); also JE Sandys, History of Classical Scholarship ( 1st ed.

K. Grelling und L. Nelson: Bemerkungen zu den Paradoxien von Russell und Burali-Forti.

* K. Olschzsa " Aufbau und Gliederung in den Parallelstellen der Agramer Mumienbinden " I and II in Studi Etruschi VIII 1934 pp. 247 ff.

** K. Fischer, Mörikes kunstlerisches Schaffen und dichterische Schöpfungen ( 1903 )

* homo ~ futura ( 2005, Honey Dr. Georg Linde, Plastique, K. Gross und F. Enstein )

* 1962, K. Kanthack, N. Hartmann und das Ende der Ontologie.

Ein Beitrag der Ethnologie zur Altorientalistik “, in: K. Geisenhainer und K. Lange ( eds.

A Festschrift for Patrick K. Ford, ed.

* ( Festschrift for Robert K. Merton )

Kleinert's 60. birthday was honored by a Festschrift and a Festcolloquium with 65 contributions by international colleagues ( for instance Y. Ne ' eman, R. Jackiw, H. Fritzsch, R. Ruffini, C. DeWitt, L. Kauffman, J. Devreese, and K. Maki ).

* Space-In Pursuit of New Horizons ( A Festschrift for Prof U R Rao ) by R K Varma, K Kasturirangan, U S Srivastava and B H Subbaraya ( 1992 )

* Zephyr and Boreas: Winds of Change in the Fiction of Ursula K. Le Guin: A Festschrift in Memory of Pilgrim Award Winner, Marjorie Hope Nicolson, ed.

Festschrift für K .- D. Jäger, 1996.