@article {IOPORT.06062674, author = {Byrne, Eimear and Kiermaier, Michael and Sneyd, Alison}, title = {Properties of codes with two homogeneous weights.}, year = {2012}, journal = {Finite Fields and their Applications}, volume = {18}, number = {4}, issn = {1071-5797}, pages = {711-727}, publisher = {Elsevier Science (Academic Press), San Diego, CA}, doi = {10.1016/j.ffa.2012.01.002}, abstract = {Summary: Delsarte showed that for any projective linear code over a finite field $GF(p^{r})$ with two nonzero Hamming weights $w_{1}< w_{2}$ there exist positive integers $u$ and $s$ such that $w_{1}=p^{s} u$ and $w_{2}=p^{s}$(u+1). Moreover, he showed that the additive group of such a code has a strongly regular Cayley graph. Here we show that for any regular projective linear code C over a finite Frobenius ring with two integral nonzero homogeneous weights $w_{1} < w_{2}$ there is a positive integer $d$, a divisor of $|C|$, and positive integer $u$ such that $w_{1}=du$ and $w_{2}=d(u+1)$. This gives a new proof of the known result that any such code yields a strongly regular graph. We apply these results to existence questions on two-weight codes.}, identifier = {06062674}, }