7260 Systems of Quadrics 



Family of quadrics with common (quartic) 

 curve. Cardinaal, J. N. Arch. Wisk. 13 

 (1887) 213- ; Fschr. Mth. (1886) 603-. 



, property. Cardinaal, J. N. Arch. 



Wisk. 10 (1884) 113-. 



Homogeneous coordinates and invariants in 

 theory of quadrics. Weyr, E. Casopis 26 

 (1897) 1-, 121- ; Fschr. Mth. (1897) 563. 



Homographic properties of conic and quadric 

 systems. Battaglini, G. G. Mt. 1 (1863) 

 287. 



Hyperboloids, conjugate. Weddle, T. Camb. 

 and Dubl. Mth. J. 2 (1847) 274-. 



through 4 points. Valeri, D. Mod. Ac. Sc. 

 Mm. 4 (1886) 355-. 



Linear systems and nets of quadrics. Reye, T. 



Crelle J. Mth. 82 (1877) 54-. 

 Locus of centres of conies and quadrics. 



Picquet, H. N. A. Mth. 4 (1865) 66-. 

 , etc. , of systems of conies and quadrics. 



Geiser, C. F. Ziir. Vjschr. 10 (1865) 219-. 

 Nets of quadrics. Sturm, R. Crelle J. 70 



(1869) 212-. 



. Frahm, W. Mth. A. 7 (1874) 635-. 



. Vanecek, J. 8. Liege S. Sc. Mm. 11 



(1885) No. 17, 8 pp. 

 Orthogonal cones and hyperboloids, systems. 



Ruth, F. [1879] Wien Ak. Sb. 80 (1880 



(Ab. 2) 257-. 



touching quadric, locus of vertices. 

 Koch, A. Arch. Mth. Ps. 9 (1890) 250-. 



quadrics. Taylor, H. M. QJ. Mth. 26 

 (1893) 214-. 



Parallel conjugate diameters in two surfaces. 



Janni, V. G. Mt. 1 (1863) 223-, 280-. 

 Pencils of quadrics. Vanecek, J. S. Liege S. 



Sc. Mm. 10 (1883) (No. 7) 16 pp. 

 on point or tangential, and extension 



of Chasles's theorem. Gardiner, M. [1868] 



QJ. Mth. 10 (1870) 132-. 

 , synthetic treatment. MiMer, Hub. Mth. 



A. 1 (1869) 627-. 

 5-point and 6-point quadrics, systems. 



Woepcke, F. Crelle J. 54 (1857) 285-. 

 6-point quadrics, equation. Mannheim, A. 



Bll. Sc. Mth. As. 2 (1871) 125-. 

 Polar reciprocal quadrics, systems. Montesano, 



D. A. Mt. 14 (1886-87) 131-. 

 Quadrics with common intersection. Aoust, 



(I'abbt) . C. B. 64 (1867) 590-, 746-. 



conjugate with respect to fixed tetrahedron, 

 system. .Painvin, L. [1863] Crelle J. 63 

 (1864) 58-. 



having various contacts with given surface. 

 Torroja, E. Fschr. Mth. (1895) 623. 



inscribed in same developable . Cazamian, A . 

 N. A. Mth. 13 (1894) 395-. 



intersecting along two plane curves, or 

 enveloped by two common cones. Stammer, 

 W. G. Mt. 6 (1868) 153-. 



satisfying 8 conditions, and 9 conditions, etc. 

 Chasles, M. C. B. 62 (1866) 405-. 



9 conditions, number. Salmon, G. 

 QJ. Mth. 8 (1867) 1-. 



touching four straight lines, properties. 



Higher Curves and Surfaces 7600 



Botation hyperboloids passing through skew 



cubic. Cremona, L. [1863] (vn) Crelle J. 



63 (1864) 141-. 

 ,3 rectangular, of same system. Fiedler, 



W. Ziir. Vjschr. 29 (1884) 343-. 

 quadrics through 5 points, axes. Laguerre, 



E. N. A. Mth. 18 (1879) 206-. 

 , focal properties. Recoq, A. 



N. A. Mth. 5 (1866) 157-. 

 Self -reciprocal surfaces, system. Cayley, A. 



QJ. Mth. 15 (1878) 124-. 

 Similarity conditions for two quadrics not 



similarly placed. Weddle, T. Camb. and 



Dubl. Mth. J. 8 (1853) 35-. 

 Spheres, system. Timerding, H. E. Crelle J. 



Mth. 121 (1900) 188-. 

 Straight lines and tangent-quadrics, systems. 



Bricard, R. Par. S. Mth. Bll. 25 (1897) 



180-. 

 Surfaces of symmetry common to several 



quadrics. Mangeot, S. As. Fr. C. E. (1891) 



(Pt. 2) 224-. 

 Symbolical calculus, application. Garbieri, G. 



Ven. I. At. (1885-86) 943-. 

 System of two quadrics, theorems. Chasles, M. 



Brux. Ac. Bll. 5 (1838) 561-. 

 Theorems. Ovidio,E.d\ Tor. Ac. Sc. At. 14 



(1878) 452-. 

 n times infinite systems. Burali-Forti, C. 



G. Mt. 24 (1886) 334-. 



Algebraic curves and surfaces of 

 degree higher than the second. 

 (See also 8070.) 



7600 General. 



Gergonne, J. D. Gergonne A. Mth. 17 (1826- 



27) 214- ; 18 (1827-28) 149- ; 19 (1828-29) 

 120-. 



Bobillier, . Gergonne A. Mth. 18 (1827-28) 



89-, 157-, 253-; 19 (1828-29) 106-, 138-. 

 Poncelet, J. V. Gergonne A. Mth. 18 (1827- 



28) 125-. 



Graves, C. Ir. Ac. P. 3 (1847) 151-. 

 Hunyady, J. (xn) Mag. Tud. Ak. Ets. 2 



(No. 1) (1868) 13-. 



Jonquieres, E. de. A. Mt. 8 (1877) 312-. 

 Beck, A. [1878] Mth. A. 14 (1879) 207-. 

 Anharmonic ratio, extension of notion to nth 



order. Folie, F. Brux. Ac. Bll. 44 (1877) 



469-; 45 (1878) 88-. 

 Billiard problem, circular. Tychsen, C. Mth. 



Ts. 3 (1861) 60-. 

 Centres, axes, and planes of symmetry in 



algebraic figures, determination. Mangeot, S. 



Par. EC. Norm. A. 14 (1897) 9-. 



of curves and surfaces. Roberts, S. QJ. 

 Mth. 9 (1868) 25-. 



, new method of finding. 

 Mangeot, S. N. A. Mth. 17 (1898) 215-. 



Cardinaal, J. N. Arch. Wisk. 10 (1884) , and their polars. Jeffery,H.M. 



131-. [1869] QJ. Mth. 10 (1870) 171-. 



514 



