shaped like a ring or a hardware washer. The word "annulus" is borrowed from the Latin word anulus or annulus meaning 'little ring'. The adjectival form is...

Look up annulus in Wiktionary, the free dictionary. Annulus (or anulus) or annular indicates a ring- or donut-shaped area or structure. It may refer to:...

Unit disk, a disk with radius one Annulus (mathematics), the region between two concentric circles Ball (mathematics), the usual term for the 3-dimensional...

States Ring (mathematics), an algebraic structure Ring of sets, a family of subsets closed under certain operations Annulus (mathematics), a geometric...

handheld hole punch, used to make holes in paper and similar materials. Annulus (mathematics) Depression (geology) Law of holes Sinus Tunnel Watering hole Trypophobia...

an annulus rather than a disc, and possibly some boundary points. The series converges uniformly on compact subsets of the interior of the annulus of...

In mathematics, the annulus theorem (formerly called the annulus conjecture) states roughly that the region between two well-behaved spheres is an annulus...

z ) {\displaystyle f(z)} will then be valid anywhere inside the annulus. The annulus is shown in red in the figure on the right, along with an example...

not refer literally to the geometric shape. Circle Circle anatomy Annulus (mathematics) Area of a disk Bipolar coordinates Central angle Circular sector...

The right fibrous ring is known as the annulus fibrosus dexter cordis, and the left is known as the annulus fibrosus sinister cordis. The right fibrous...

{bh^{3}}{12}}+{\frac {hb^{3}}{12}}={\frac {bh}{12}}\left(b^{2}+h^{2}\right)} Consider an annulus whose center is at the origin, outside radius is r 2 {\displaystyle r_{2}}...

230, ... (sequence A003600 in the OEIS). Mathematics portal 3-torus Algebraic torus Angenent torus Annulus (geometry) Clifford torus Complex torus Dupin...

machinery possible. In mathematics, the study of the circle has helped inspire the development of geometry, astronomy and calculus. Annulus: a ring-shaped object...

S=4\pi ^{2}rR} Toroidal inductors and transformers Toroidal propellers Annulus Solenoid Helix Weisstein, Eric W. "Toroid". MathWorld. Stewart, B.; "Adventures...

In mathematics, mathematical physics and the theory of stochastic processes, a harmonic function is a twice continuously differentiable function f : U...

In mathematics and physics, Laplace's equation is a second-order partial differential equation named after Pierre-Simon Laplace, who first studied its...

and 51. The maximal number of pieces that can be obtained by cutting an annulus with twelve cuts is 90, as is the number of 12-dimensional polyominoes...

velocity is the speed of the drilling fluid's movement in a column called an annulus in oil wells. It is commonly measured in feet per minute (ft/min) or meters...

In mathematics, a Möbius strip, Möbius band, or Möbius loop is a surface that can be formed by attaching the ends of a strip of paper together with a...

I-bundles are the annulus and the Möbius band, the only two possible I-bundles over the circle S 1 {\displaystyle S^{1}} . The annulus is a trivial or untwisted...

there is an isotopy of N onto a boundary component of M. Consider the annulus I × S 1 {\displaystyle I\times S^{1}} . Let π denote the projection map...

complex analysis, a branch of mathematics, the residue at infinity is a residue of a holomorphic function on an annulus having an infinite external radius...

In mathematics, the Klein bottle (/ˈklaɪn/) is an example of a non-orientable surface; that is, informally, a one-sided surface which, if traveled upon...

solve this type of problem, originally applied to finding the area of an annulus, given only its chord length Napkin ring problem, another problem where...

Circle points segments proof Mrs. Miniver's problem Isoperimetric theorem Annulus Ptolemaios' theorem Steiner chain Eccentricity Ellipse Semi-major axis...

(2^5 + 3^5 = 275). 275 is the maximum number of pieces made by cutting an annulus with 22 cuts. 275 is the smallest non semiprime that follows the equations...

Maximum Allowable Annulus Surface Pressure is an absolute upper limit for the pressure in the annulus of an oil and gas well as measured at the wellhead...

philosopher of science. He is often described as a polymath, and in mathematics as "The Last Universalist", since he excelled in all fields of the discipline...

{\textstyle \sum _{k=-\infty }^{\infty }c_{k}(z-a)^{k}} and converges in an annulus. In particular, a Laurent series can be used to examine the behavior of...

but no ripping or glueing) allow us to distinguish a polygon from an annulus (ring with a hole in the centre), but do not allow us to distinguish two...