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If a current, , injected into port A produces a voltage, , at port B and injected into port B produces at port A, then the network is said to be reciprocal. Equivalently, reciprocity can be defined by the dual situation; applying voltage, , at port A producing current at port B and at port B producing current at port A. [1] In general, passive networks are reciprocal.
Reciprocal polynomial, a polynomial obtained from another polynomial by reversing its coefficients; Reciprocal rule, a technique in calculus for calculating derivatives of reciprocal functions; Reciprocal spiral, a plane curve; Reciprocal averaging, a statistical technique for aggregating categorical data
In classical electromagnetism, reciprocity refers to a variety of related theorems involving the interchange of time-harmonic electric current densities (sources) and the resulting electromagnetic fields in Maxwell's equations for time-invariant linear media under certain constraints.
A traditional way to define the reciprocity is using the ratio of the number of links pointing in both directions < > to the total number of links L [6] = < >. With this definition, = is for a purely bidirectional network while = for a purely unidirectional one.
The siemens (symbol: S) is the unit of electric conductance, electric susceptance, and electric admittance in the International System of Units (SI). Conductance, susceptance, and admittance are the reciprocals of resistance, reactance, and impedance respectively; hence one siemens is equal to the reciprocal of one ohm (Ω −1) and is also referred to as the mho.
Reciprocal polynomials, the coefficients of the remainder polynomial are the bits of the CRC; Reciprocal square root; Reciprocity (projective geometry), a collineation from a projective space onto its dual space, taking points to hyperplanes (and vice versa) and preserving incidence; Frobenius reciprocity, from group representation theory
Figure 1: Example two-port network with symbol definitions. Notice the port condition is satisfied: the same current flows into each port as leaves that port.. In electronics, a two-port network (a kind of four-terminal network or quadripole) is an electrical network (i.e. a circuit) or device with two pairs of terminals to connect to external circuits.
Japan's Prime Minister Fumio Kishida welcomed the Head of the International Department of the CCP Liu Jianchao at the Prime Minister's Office in 2024. The Chinese calligraphy on the wall writes "Jiěyī" (Chinese: 解衣; lit. 'undress'), a term that means sharing each other and tiding over the difficulty, used to stress the "strategic, reciprocal" relationship between the two countries.