- In geometry, a
conical surface is a three-dimensional
surface formed from the
union of
lines that p****
through a
fixed point and a
space curve. A (general)...
-
quondam con- cone Gr**** κῶνος (kônos), κωνικός (kōnikós) conic, conical,
conicoid, conodont, conoid, conoscope, orthocone, orthoconic,
polyconic condi- season...
-
quondam con- cone Gr**** κῶνος (kônos), κωνικός (kōnikós) conic, conical,
conicoid, conodont, conoid, conoscope, orthocone, orthoconic,
polyconic condi- season...
- later, in 1792 and 1793, he
reduced the
equations of the
quadrics (or
conicoids) to
their canonical forms.
During the
years from 1772 to 1785, he contributed...
-
combinations of
these functions.
Since all
surfaces with
constant ρ, φ and z are
conicoid, Laplace's
equation is
separable in
cylindrical coordinates.
Using the...
- rise to non-equivalent objects.
Theodore G.
Ostrom had
suggested the name
conicoid for
these conic-like
figures but did not
provide a
formal definition and...
- \end{aligned}}}
Since all of the
surfaces of
constant σ, τ and z are
conicoids, Laplace's
equation is
separable in
parabolic cylindrical coordinates...
- Geometry, 12 (2): 132–138, doi:10.1007/bf01918221 Ostrom, T.G. (1981), "
Conicoids: Conic-like
figures in Non-Pappian planes", in Plaumann, Peter; Strambach...
