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The procedure for deriving the Ward-Takahashi identity is applied to thepseudovector coupling pion-nucleon system in which the isovector andaxial-vector current does not conserved. The relation is given in closed formalthough it is more complicated than that of the quantum electrodynamics. Theapplication to the propagator has revealed the interesting results.

Relation between the Vertex Function and the Propagators in the Pseudovector Coupling Pion-Nucleon System