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Qu'est-ce (qui) est Y-Δ transform - définition
Y-Δ transform
.png?width=200 "Equivalent practical generator connected in wye/star/tee. Click on image to expand it.")
.png?width=200 "Practical generator connected in delta/triangle/pi. The quantities shown are phasor voltages and complex impedances. Click on image to expand it.")
MATHEMATICAL TECHNIQUE TO SIMPLIFY THE ANALYSIS OF AN ELECTRICAL NETWORK
Wye-delta transform; Y-delta transformation; Y-delta transform; Star-Triangle transformation; Y-delta transformations; Delta Y; Delta wye; Star and delta connection; Y-D transform; Delta star; Star-Δ transform; Star delta transform; Wye-delta; Star-triangle transformation; Triangle-star transformation; Δ-Y transform; Y connection; Delta-star; Delta-wye transform; Delta-Wye transform; Wye-Delta transform; Delta-Wye transformation; Delta-wye transformation; Wye-delta transformation; Wye-Delta transformation; Y-Δ transformation; Δ-Y transformation; Y-Δ; Star-triangle transform; Star-triangle; Δ-Y; Delta-to-wye transformation; Delta-to-wye transform; Delta-to-wye; Delta-wye
The Y-Δ transform, also written wye-delta and also known by many other names, is a mathematical technique to simplify the analysis of an electrical network. The name derives from the shapes of the circuit diagrams, which look respectively like the letter Y and the Greek capital letter Δ.
Z-transform
MATHEMATICAL TRANSFORM WHICH CONVERTS SIGNALS FROM THE TIME DOMAIN TO THE FREQUENCY DOMAIN
Z transform; Laurent transform; Bilateral Z-transform; Bilateral z-transform; Z Transform; Z-domain; Z-transformation
In mathematics and signal processing, the Z-transform converts a discrete-time signal, which is a sequence of real or complex numbers, into a complex frequency-domain (z-domain or z-plane) representation.
Penrose transform
COMPLEX ANALOGUE OF THE RADON TRANSFORM THAT RELATES MASSLESS FIELDS ON SPACETIME TO COHOMOLOGY OF SHEAVES ON COMPLEX PROJECTIVE SPACE
Penrose-Ward transform; Ward transform; Penrose–Ward transform; Ward correspondence; Twistor transform
In theoretical physics, the Penrose transform, introduced by , is a complex analogue of the Radon transform that relates massless fields on spacetime to cohomology of sheaves on complex projective space. The projective space in question is the twistor space, a geometrical space naturally associated to the original spacetime, and the twistor transform is also geometrically natural in the sense of integral geometry.
