προβλημα με περιοδο

Question

&Gamma;&epsilon;&iota;&alpha; &sigma;&alpha;&sigmaf;!&epsilon;&iota;&mu;&alpha;&iota; 20&chi;&rho;&omicron;&nu;&omega;&nu; &mu;&omicron;&upsilon; &epsilon;&iota;&chi;&epsilon; &pi;&epsilon;&iota; &omicron; &gamma;&iota;&alpha;&tau;&rho;&omicron;&sigmaf; &omicron;&tau;&iota; &epsilon;&chi;&omega; &pi;&omicron;&lambda;&upsilon;&kappa;&upsilon;&sigma;&tau;&iota;&kappa;&epsilon;&sigmaf; &alpha;&lambda;&lambda;&alpha; &pi;&alpha;&nu;&tau;&alpha; &mu;&omicron;&upsilon; &epsilon;&rho;&chi;&omicron;&tau;&alpha;&nu; &kappa;&alpha;&nu;&omicron;&nu;&iota;&kappa;&alpha; &eta; &pi;&epsilon;&rho;&iota;&omicron;&delta;&omicron;&sigmaf;! &tau;&omega;&rho;&alpha; &omicron;&mu;&omega;&sigmaf; &epsilon;&iota;&chi;&alpha; &kappa;&alpha;&theta;&upsilon;&sigma;&tau;&epsilon;&rho;&eta;&sigma;&eta; &pi;&epsilon;&rho;&iota;&omicron;&delta;&omicron;&upsilon; 2 &mu;&eta;&nu;&epsilon;&sigmaf;.&Tau;&epsilon;&lambda;&epsilon;&upsilon;&tau;&alpha;&iota;&alpha; &pi;&epsilon;&rho;&iota;&omicron;&delta;&omicron;&sigmaf; &eta;&tau;&alpha;&nu; 25/3/12, &pi;&eta;&gamma;&alpha; &sigma;&tau;&omicron; &gamma;&iota;&alpha;&tau;&rho;&omicron; &mu;&omicron;&upsilon; &kappa;&alpha;&iota; &mu;&omicron;&upsilon; &epsilon;&iota;&pi;&epsilon; &nu;&alpha; &kappa;&alpha;&nu;&omega; &beta;-&chi;&omega;&rho;&iota;&alpha;&kappa;&eta; &tau;&eta;&nu; &epsilon;&kappa;&alpha;&nu;&alpha; &alpha;&lambda;&lambda;&alpha; &mu;&epsilon;&chi;&rho;&iota; &nu;&alpha; &pi;&alpha;&rho;&omega; &tau;&omicron; &alpha;&pi;&omicron;&tau;&epsilon;&lambda;&epsilon;&sigma;&mu;&alpha; &mu;&omicron;&upsilon; &eta;&rho;&theta;&epsilon; &kappa;&alpha;&iota; &eta; &pi;&epsilon;&rho;&iota;&omicron;&delta;&omicron;&sigmaf; 25/5/12 &kappa;&alpha;&iota; &eta; &alpha;&pi;&alpha;&nu;&tau;&eta;&sigma;&eta; &eta;&tau;&alpha;&nu; &alpha;&rho;&nu;&eta;&tau;&iota;&kappa;&eta; &epsilon;&nu;&nu;&omicron;&epsilon;&iota;&tau;&alpha;&iota; &alpha;&lambda;&lambda;&alpha; &mu;&omicron;&upsilon; &kappa;&rho;&alpha;&tau;&eta;&sigma;&epsilon; &mu;&omicron;&nu;&omicron; 3 &mu;&epsilon;&rho;&epsilon;&sigmaf; &delta;&eta;&lambda;&alpha;&delta;&eta; &mu;&epsilon;&chi;&rho;&iota; 28/5/12.&Epsilon;&iota;&chi;&alpha; &epsilon;&lambda;&epsilon;&upsilon;&theta;&epsilon;&rho;&epsilon;&sigmaf; &epsilon;&pi;&alpha;&phi;&epsilon;&sigmaf; &mu;&epsilon; &tau;&omicron;&nu; &sigma;&upsilon;&nu;&tau;&rho;&omicron;&phi;&omicron; &mu;&omicron;&upsilon; &mu;&epsilon;&chi;&rho;&iota; &kappa;&alpha;&iota; 20/5/12 &upsilon;&pi;&alpha;&rho;&chi;&epsilon;&iota; &pi;&epsilon;&rho;&iota;&pi;&tau;&omega;&sigma;&eta; &nu;&alpha; &epsilon;&iota;&mu;&alpha;&iota; &epsilon;&gamma;&kappa;&upsilon;&omicron;&sigmaf; &kappa;&alpha;&iota; &nu;&alpha; &mu;&eta;&nu; &epsilon;&iota;&chi;&epsilon; &phi;&alpha;&nu;&epsilon;&iota; &sigma;&tau;&eta;&nu; &epsilon;&xi;&epsilon;&tau;&alpha;&sigma;&eta;? &gamma;&iota;&alpha;&tau;&iota; &kappa;&rho;&alpha;&tau;&eta;&sigma;&epsilon; &tau;&omicron;&sigma;&omicron; &lambda;&iota;&gamma;&omicron; &eta; &pi;&epsilon;&rho;&iota;&omicron;&delta;&omicron;&sigmaf; &mu;&omicron;&upsilon;? &sigma;&upsilon;&nu;&eta;&theta;&omega;&sigmaf; &kappa;&rho;&alpha;&tau;&alpha;&epsilon;&iota; 6-7 &mu;&epsilon;&rho;&epsilon;&sigmaf;!