8010 



Involution and homography, extension of 

 theories. Le Paige, G. M. M. H. H. Brux. 

 Ac. Bll. 44 (1877) 546-. 



of kth rank and (2fc + l)th degree, neutral 

 group. Le Paige, C. M. M. H. H. [1882] 

 Wien Ak. Sb. 86 (1883) (Ab. 2) 104-. 



Involutions, harmonic, on plane and sphere. 

 Vries, J. de. Haarl. Ms. Teyl. Arch. 4 

 (1896) 119-. 



, higher order. Mobius, A. F. Leip. B. 7 

 (1855) 123-. 



Involutory automorphic substitutions of ra- 

 tional function, parametric representation. 

 Hofmann, F. Arch. Mth. Ps. 8 (1890) 225-. 



configurations, protective. Stahl, W. Crelle 

 J. Mth. 107 (1891) 179-. 



correspondence, system of conies in. Retail, 

 V. Bologna Ac. Sc. Mm. 5 (1883) 373-. 



space transformations determined by line 

 complex of Hirst. Pieri, M. Mil. I. Lomb. 

 Bd. 25 (1892) 1037-. 



transformation of straight line. Emch, A. 

 [1895] Kan. Un. Q. 4 (1896) 111-. 



transformations, 2, with applications. 

 Stiner, G. Ziir. Vjschr. 40 (1895) 317-. 



Linear group of transformation in plane, fun- 

 damental property. Emch, A. [1895] A. Mth. 

 10 (1895-96) 3-. 



substitutions, new theory. Laurent, H. 

 Liouv. J. Mth. 4 (1898) 75-. 



transformation of geometric figures. Er- 

 makov, V.P. Bee. Mth. (Moscou) 13 (1886) 749-. 



transformations. Kantor, S. [1880] Wien 

 Ak. Sb. 82 (1881) (Ab. 2) 34-. 



between 2 quadrics. Taber, H. L. Mth. 



S. P. 24 (1893) 290-. 

 , successive. Kantor, S. [1880] Wien 



Ak. Sb. 82 (1881) (Ab. 2) 39-. 

 Lines and polar surfaces, theory. Lazzeri, G. 



Mil. I. Lomb. Bd. 24 (1891) 1021-. 

 Loci arising from 3 figures, protectively related. 



Del Re, A. Palermo Cir. Mt. Ed. 1 (1887) 



272-, 398. 



Metrical properties of involutions and con- 

 ditions for double elements. Boguslavskij, 



A. I. Mosc. S. Sc. Bll. 65 (No. 2) (1890) 52-; 



Fschr. Mth. (1892) 572. 

 Null system, special case. Sucharda, A. 



Casopis29 (1900) 89-; Fschr. Mth. (1900) 528. 

 Plane curves, polar transformation. Ocagne, 



M. d\ G. Teix. J. Sc. 6 (1885) 3-. 

 transformable into one another by group 



of transformations. Klein, F., < Lie, S. 



Mth. A. 4 (1871) 50-. 



transformations, conditions of rationality of 

 double planes. Castelnuovo, G., <& Enriques, 

 F. Palermo Cir. Mt. Bd. 14 (1900) 290-. 



Point plane systems, general. Voss, A. Mth. 



A. 23 (1884) 45-. 

 , rational algebraic. Voss, A. Mth. 



A. 23 (1884) 359-. 

 Polar plane systems; and ternary quadratic 



correspondences. Del Re, A. G. Mt. 28 



(1890) 257-. 



reciprocal figures, contact of inverse figures 

 with. Vanecek , J. S., & Vanecek, M. N. 

 [1883] St Pet. Ac. Sc. Bll. 29 (*1884) 281-. 



Collineation ; duality 



8010 



Polar reciprocal figures, transformation. 

 Vanecek, J. S. Liege S. Sc. Mm. 11 (1885) 

 No. 2, 21 pp. 



of surface with multiple points, determi- 

 nation of double curve. Saltel, L. Brux. Ac. 

 Bll. 40 (1875) 27-. 



surfaces, theorems. Hamilton, (Sir) W. R. 



Ir. Ac. P. 4 (1850) 192-. 



, theory, revision and extension of 

 numerical formulae. Zeuthen, H. G. Mth. 

 A. 10 (1876) 446-. 



reciprocals, transformation of barycentric 

 properties by. Ocagne, M. d'. Mathesis 5 



(1885) 170-. 



surfaces of plane, theory. Painvin, L. F. 

 [1865] (xii) Lille S. Mm. 2 (1866) 345-. 



systems. Romero, A. del. (xn) Barcel. 

 Ac. Mm. 1 (1878) 133-. 



. Jung, G. Mil. I. Lomb. Bd. 12 (1879) 



169-, 218-, 535-. 



(points, lines, planes), construction. 

 Schroder, . D. Nf. Tbl. (*1879) 176-. 



in space, polar pentagons and hexagons 



of. Reye, T. Crelle J. Mth. 77 (1874) 269-. 



theory of algebraic surfaces, extension. 

 Reye, T. Crelle J. Mth. 78 (1874) 97-. 



Poles and polars. Fenwick, S. Mathematician 



1 (1845) 125-, 235-, 281-. 

 Projective connection of systems of curves. 



Fiedler, W. Ziir. Vjschr. 24 (1879) 180-. 



construction of rational curves. Schoute, 

 P. H. N. Arch. Wisk. 12 (1886) 1-; Arch. 

 Neerl. 20 (1886) 49-. 



correspondence, plane, double points in. 

 Broden, T. Arch. Mth. Ps. 9 (1890) 225-. 



correspondences, degenerate. Del Prete, G. 

 Mil. I. Lomb. Bd. 30 (1897) 400-, 464-. 



in fundamental geometric forms of 1st 



kind. Paolis, R. de. Tor. Ac. Sc. Mm. 42 

 (1892) 495-. 



between 2 planes and between 2 spaces. 



Loria, G. G. Mt. 22 (1884) 1-, 117. 



fundamental forms, surfaces arising from. 

 Cardinaal, J. N. Arch. Wisk. 18 (1891) 

 123-. 



geometry. Killing, W. Mth. A. 43 (1893) 

 569-. 



metrics. Ovidio, E. d'. Tor. Ac. Sc. At. 

 28 (1893) 566-. 



properties of curves and surfaces. Jon- 

 quieres, E. de. Crelle J. 66 (1866) 289-. 



, application of transversals. 



Poncelet, J. V. Crelle J. 8 (1832) 21-, 117-, 

 213-, 370-. 



reflection, and space collineation. Bocher, 

 M. Mth. A. 43 (1893) 598-. 



relations given by 4 straight lines in space. 

 Krieg von Hochfelden, F. (Frhr.) Wien 

 Ak. Sb. 97 (1889) (Ab. 2a) 806-. 



relationships and theory of higher curves. 

 Seydewitz, F. Grunert Arch. 7 (1846) 113-; 

 8 (1846) 1-. 



substitutions leaving a circle unchanged. 

 Schlesinger, L. Orv.-Termt. Ets. (Termt. 

 Szak) (1898) 14-, (Rv.) 15- ; Crelle J. Mth. 

 121 (1900) 168-. 



transformation. Genese, R. W. B. A. Bp. 



(1886) 538-. 



555 



