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π SIMILAR VOLUMES
We present a family of sum rules which relate the proton electromagnetic form factors to proton electroproduction cross sections. These sum rules provide a test of the local commutation properties of the electric current operators.
The wide-ranging interest of Amos de Shalit in all fields of physics has helped and encouraged many younger people, and not only in his own field of research. Those of us who have enjoyed his penetrating insight and constructive criticism in many branches of physics will find it proper to dedicate t
## Abstract A complex response function describing a reaction of a multiβparticle system to a weak alternating external field is the boundary value of a Nevanlinna class function (i.e. a holomorphic function with nonβnegative imaginary part in the upper halfβplane). Attempts of direct calculations
General formulae for analytic derivatives with respect to nuclear positions and velocities of an electronic wavefunction satisfying the Hellmann-Feynman theorem and of its expectation values are given. Sum rules fulfilled by the derivatives of the expectation value of an arbitrary electronic operato
A sum rule 15 shown to exfit 111 vibrational Raman optical activrty m non-absorbmg regrons for lsotopicalIy chiral molecules d the point group of the achiral decttun dMri%u~on u 0ihe.r tixari Cnh and Ct. and d ihe Isotope-subsMuted &es are located m refleaon p'kxnes or related p-e by Improper rotati