%0 Journal Article %T Image and Transfer Functions %A Emil Schwab %J Annals. Computer Science Series %D 2007 %I Mirton Publishing House, Timisoara %X We describe three transfer functions of an inverse exact category which arise from three transfer functions. We concentrate on some of the basic results which emerge from the theory of projections in inverse exact categories. %U http://anale-informatica.tibiscus.ro/download/lucrari/5-1-18-Schwab.pdf