The Quarterly Journal of Pure and Applied Mathematics, Volumen47J.W. Parker, 1916 |
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Página 6
... quartic instead of a cubic point 1 would be a quadruple point consisting of the special triple point on ( 11 ) with an ordinary branch through it ; and this gives rise to a fourth branch having tritactic contact with the other branches ...
... quartic instead of a cubic point 1 would be a quadruple point consisting of the special triple point on ( 11 ) with an ordinary branch through it ; and this gives rise to a fourth branch having tritactic contact with the other branches ...
Página 55
... nine , " American Journal of Mathematics , vol . xxxvii . , p . 447 , cf. Art . 7 . binodal quartic curve Euf , ( , ) = 0 Prof. Sisam , On surfaces doubly generated by conics . 55 On surfaces doubly generated by conics By C H Sisam - 55.
... nine , " American Journal of Mathematics , vol . xxxvii . , p . 447 , cf. Art . 7 . binodal quartic curve Euf , ( , ) = 0 Prof. Sisam , On surfaces doubly generated by conics . 55 On surfaces doubly generated by conics By C H Sisam - 55.
Página 56
binodal quartic curve Euf , ( , ) = 0 . The genus of the section does not exceed unity . The order of the surface does not exceed eight , but this may be reduced by the appearance of fundamental points in the system of quartics Zu f = 0 ...
binodal quartic curve Euf , ( , ) = 0 . The genus of the section does not exceed unity . The order of the surface does not exceed eight , but this may be reduced by the appearance of fundamental points in the system of quartics Zu f = 0 ...
Página 58
... quartic , we determine two surfaces ( in plane coordinates ) , of class four and six respectively , enveloped by the planes which intersect the given surface in equianharmonic and harmonic curves . The locus of the planes which ...
... quartic , we determine two surfaces ( in plane coordinates ) , of class four and six respectively , enveloped by the planes which intersect the given surface in equianharmonic and harmonic curves . The locus of the planes which ...
Página 59
... quartic curves . These quartics constitute a system of genus eleven of quartic curves on the surface . = The locus of the points of tangency of the planes of the conics const . is a c ,, ( Art . 3 ) of order sixteen and genus five . It ...
... quartic curves . These quartics constitute a system of genus eleven of quartic curves on the surface . = The locus of the points of tangency of the planes of the conics const . is a c ,, ( Art . 3 ) of order sixteen and genus five . It ...
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Abelian integral asymptotic black intervals calculation Cayleyan content zero continuous function convergent corresponding point countable countable set cusp decimal denote derivates determinant differential coefficient Dirichlet's series double curve double integral double points edition equation expansion expression finite follows formula fourfold geometrical means given number Green's function harmonic curve Hence Hessian hypertacnode infinite intersection L'Intermédiaire des Math LECAT lemma logarithm method of geometrical MUIR multiple points Napier's node obtained ordinary branch Ozanam paper polar positive content positive number primitive curve proved quadric quartic quotient residues respect result satisfying set of content singularity square roots stars Steinerian summable surface system of conics tacnode tact-invariant tangent plane theorem theory transformation triple point values vanish Vlacq W. H. Young Weierstrass аф др дф
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Página 347 - A. (1846, 1856). [On some analytical formulae, and their application to the theory of spherical coordinates.
Página 197 - ... where the real value of log (—y) is to be taken when y is negative, and the logarithm is rendered one- valued by the stipulation that the variable is not to cross the real axis at any point on the positive side of the origin. Since sin TTZ this result can be written in the form This theorem is valid for all values of z — in contrast to that found in the next article, which is true only for restricted values of the variable. Example l.
Página 87 - Jo j where h(s,t)=(l — a)t + — , t^ (lt)s + ~, t> *P and ^(0 is continuous in the interval 0^<^1, can be expanded in an absolutely and uniformly convergent series of the...
Página 140 - ... been done by Victor Henri, Conandon or de Broglie, so as to cinematograph the motion. In the same way it is quite impossible to fix a tangent, even approximately, at any point of the trajectory. This is a case where it is really natural to think of those continuous functions which have no differential coefficients, imagined by mathematicians, and regarded quite wrongly as simple mathematical curiosities. Nature suggests them just as much as she does the functions which have differential coefficients.
Página 347 - Catalogue of Current Mathematical Journals , etc. with the names of the Libraries in which they may be found.
Página 158 - oo (here we just use the fact that the limit of the sum is the sum of the limits and the limit of the product is the product of limits.
Página 297 - The point, however, to which I wish to draw attention is that this need of rest is a psychological factor of the utmost importance in relation to the question of the extension of the line for which the French are pressing. It is my deliberate opinion, as the result of a most careful study of the question, that, if the Army is compelled at the present time to...
Página 375 - A Proof by elementary methods , without complex quantities, that every algebraic function (with real coefficients) has factors of the form...
Página 103 - Calculation of Eighteen More, Fifty in all, Eulerian Numbers from Central Differences of Zero.