Geodesic
Projective modules over the ring of pseudorational numbers
Žurnal Sibirskogo federalʹnogo universiteta. Matematika i fizika, Tome 4 (2011) no. 4, pp. 541-550

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We prove the structure theorems which give a full description of projective modules over the ring of pseudorational numbers. We construct a complete system of invariants for such modules.
Keywords: projective module, ring of pseudorational numbers, system of invariants. 
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     author = {Egor A. Timoshenko},
     title = {Projective modules over the ring of pseudorational numbers},
     journal = {\v{Z}urnal Sibirskogo federalʹnogo universiteta. Matematika i fizika},
     pages = {541--550},
     publisher = {mathdoc},
     volume = {4},
     number = {4},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/JSFU_2011_4_4_a12/}
}
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Egor A. Timoshenko. Projective modules over the ring of pseudorational numbers. Žurnal Sibirskogo federalʹnogo universiteta. Matematika i fizika, Tome 4 (2011) no. 4, pp. 541-550. http://geodesic.mathdoc.fr/item/JSFU_2011_4_4_a12/