5230 



Transformation of Differential Forms 



5230 



Eeciprocants, theory. Perrin, E. C. B. 102 



(1886) 351-. 

 Eeversion of partial differential expressions 



with two independent and two dependent 



variables. Elliott, E. B. [1890] L. Mth. 



S. P. 22 (1891) 79-. 

 Total differentials of first kind. Noether, M. 



Erlang. Ps. Md. S. Sb. 18 (1886) 11-. 



TEANSFOEMATION. 



Sylvester, J. J. E. S. P. 7 (1854-55) 219-. 

 Cockle, (Sir) Jas. Ph. Mg. 13 (1882) 357-. 

 Stackel, P. Crelle J. Mth. Ill (1893) 290-. 

 automorphic, of V V 2 = 0. Levi-Civita, T. Ven. 

 I. At. (1897-98)" 1399-. 



infinitesimal, of sum of squares. Beez, . 

 Z. Mth. Ps. 43 (1898) 65-, 121-, 277-. 



of Biicklund. Clairin, J. Bll. Sc. Mth. 24 



(1900) 284-. 

 for pseudospherical surfaces. Bianchi, L. 



Em. E. Ac. Line. Ed. 1 (1892) (Sem. 2) 3-. 



triply orthogonal pseudospherical 

 systems. Bianchi, L. Em. E. Ac. Line. 

 Ed. 1 (1892) (Sem. 2) 156-. 



biordinal of Schwarz's. Cockle, (Sir) Jas. 



Mess. Mth. 11 (1882) 49-. 

 continuous, discrete groups. Ahrens, W. Mth. 



A. 50 (1898) 518-. 

 Cremonian, continuous groups. Enriques, F., 



& Fano, G. A. Mt. 26 (1897) 59-. 

 of curves and surfaces. Bficklund, A. V. 



Lund Acta Un. 10 (1873) (Mth.) No. 2, 12 pp. 



differential operator. HatJiaway, A. S. 

 [1883] (xn) J. H. Un. Cir. [3] (1884) 35-. 



differentials of 1st order and 2nd degree by 

 generalised elliptic coordinates. Henrici, 0. 

 [1865] Crelle J. 65 (1866) 1-. 



dualistic differential. Elliott, E. B. B. A. 



Ep. (1891) 568 ; L. Mth. S. P. 23 (1892) 188-. 

 of equations, 1st order. Zorawski, K. Krk. 



Ak. (Mt.-Prz.) Bz. 6 (1893) 67-; Crc. Ac. 



Sc. Bll. (1892) 292-. 



group, finite continuous, functions represent- 

 ing. Sehur, F. Mth. A. 41 (1893) 509-. 

 groups, continuous. Maurer, L. Mth. A. 39 



(1891) 409-. 

 , , equations defining. Engel, F. Mth. 



A. 27 (1886) 1-. 

 , , theory. Campbell, J. E. L. Mth. S. 



P. 28 (1897) 381-. 



of 4-dimensional manifoldness. Kowalew- 

 ski, G. Leip. Mth. Ps. B. 50 (1898) (Mth.) 60-. 



, elementary notions. Combebiac, . N. 



A. Mth. 18 (1899) 347-. 

 , finite continuous, composition. Killing, 



W. Mth. A. 31 (1888) 252-; 33 (1889) 1-; 



34 (1889) 57- ; 36 (1890) 161-. 

 , , greatest sub-groups. Killing, W. Mth. 



A. 36 (1890) 239-. 

 , , theory. Schur, F. Mth. A. 35 (1890) 



161- ; 38 (1891) 263-. 



relating to certain differential equations. 

 Picard, E. C. E. 106 (1888) 118-. 



of homogeneous expressions. Christoffel, E. B. 

 Berl. Mb. (1869) 1-; Crelle J. 70 (1869) 46-, 



infinitesimal. Saltykoic, N. Liouv. J. Mth. 



3 (1897) 429-. 



. Lovett, E. O. B. A. Ep. (1899) 648-. 

 , of concentric conies. Lovett, E. 0. N. Y. 



Am. Mth. S. Bll. 4 (1898) 520-. 

 , especially contact transformations of plane. 



Mayer, A. Leip. Mth. Ps. B. 45 (1893) 697-. 

 , of plane. Zorawski, K. Leip. Mth. Ps. B. 



52 (1900) 77-. 



projective. Lovett, E. O. N. Y. Am. Mth. 

 S. Bll. 4 (1898) 515-. 



, monomial group defined by. Torelli, G. 



Palermo Cir. Mt. Ed. 8 (1894) 41-. 

 , , finite equations. Torelli, G. 



Nap. Ed. 33 (1894) 91-; 34 (1895) 56-. 

 , reduction to normal form. Engel, F. Leip. 



Mth. Ps. B. 46 (1894) 73-. 

 , of typical Cremonian groups. Fano, G. 



Em. E. Ac. Line. Ed. 7 (1898) (Sem. 1) 332-. 



/3C/Y /St/V /5t/\ 2 n 

 leaving equation ^J + (_ J + (^_J =0 



unaltered. Campbell, J. E. Mess. Mth. 28 

 (1899) 97-. 



lengths of arcs on surfaces unaltered. 

 Campbell, J. E. L. Mth. S. P. 29 (1898) 249-. 



Lie's, sub-groups of a group. Maillet, E. C. 

 E. 130 (1900) 1449-. 



linear homogeneous. Engel, F. Leip. Mth. 

 Ps. B. 49 (1897) 249-. 



of linear partial differential operators by ex- 

 tended linear continuous groups. Elliott, 

 E. B. L. Mth. S. P. 29 (1898) 439-. 



ordinals, new. Cockle, (Sir) Jas. Ph. Mg. 

 13 (1882) 44-. 



point, infinitesimal elements of 2nd order in. 



Hadamard, . Bordeaux S. Sc. PV. (1895- 



96) 11-. 

 of quadratic differential expressions. Voss, 



A. E. Mth. A. 16 (1880) 129-. 



form. Levy,M. C. E. 86 (1878) 463-. 



tangential. Fouret, G. C. E. 85 (1877) 134-. 



. Engel, F. Mth. A. 23 (1884) 1-. 



. Lovett, E. 0. [1898-1900] N. Y. Am. 



Mth. S. Bll. 4 (1898) 402- ; 7 (1901) 113, 115-. 

 . Levi-Civita, T. Ven. I. At. (1899-1900) 



(Ft. 2) 671-. 

 , analytic theory. Lie, S. Christiania F. 



15 (1873) 237-. 

 , of circles in plane, synthetic determination 



of all. Scheffers, G. Leip. Mth. Ps. B. 51 



(1899) (Mth.) 145-. 



, class. Lovett, E. 0. C. E. 127 (1898) 480-. 

 , , determination. Scheffers, G. Acta 



Mth. 14 (1890-91) 111-. 

 , of developable. Vivanti, G. Palermo Cir. 



Mt. Ed. 5 (1891) 205-. 

 , surfaces. Lovett, E. 0. Palermo 



Cir. Mt. Ed. 13 (1899) 210-. 

 , and differential equations. Lie, S. Leip. 



Mth. Ps. B. 50 (1898) (Mth.) 113-. 

 , generalised, theory. Liebmann, H. Leip. 



Mth. Ps. B. 51 (1899) (Mth.) 354-. 

 , group of linear, groups of finite order con- 

 tained in. Autonne, . C. E. 102 (1886) 



313-. 

 , infinitesimal, of mechanics. Lie, S. Leip. 



Mth. Ps. B. 41 (1889) 145-. 



397 



