We extend three results involving bicycles and left-right tours to infinite, locally finite graphs: Read and Rosenstiehl’s tripartition theorem, Shank’s theorem that the residues of left-right tours generate the bicycle space and the planarity criterion of Archdeacon, Bonnington and Little. In order to achieve this it is necessary to allow infinite cycles as defined by Diestel and Kühn.

ôbjective: â rare phenomenon of shared psychosis disorder occurring in the context of bipolar ï disorder, in identical twins is reported. çase presentation: two identical twins with shared psychotic manic syndrome were admitted and received antipsychotic and lithium as their treatment. psychotic symptoms of primary case did not improve and her diagnosis changed into schizophrenia. they had hypo...