Qandeel, Sahar <br/><br/>
A study on some forms of projectivity and injectivity 
Prepared by Sahar Qandeel ; supervised by Mohammad Saleh 
 -  2020  2020 
 - iii, 45 leaves : ill. ; 30 cm. 
<br/><br/> Additional abstract in Arabic  Thesis (M.S.)(Mathematics) - Birzeit University, 2020  Includes bibliographical references (leaves 43-45)  Thesis and computer disk (CD-ROM) are available in Reference Office (Main Floor) 
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<br/><br/><label>Subjects--Topical Terms: </label><br/>Projective modules (Algebra)<br/>Injective modules (Algebra)<br/>Semirings (Mathematics)--QA
<br/><br/><label>LC Class. No.: </label>QA247.3.Q253 2020