Stem infix$ (all stems)
2 papers:
- DLT-2010-PribavkinaR #complexity #regular expression
- State Complexity of Prefix, Suffix, Bifix and Infix Operators on Regular Languages (EVP, ER), pp. 376–386.
- DLT-2009-KudinovS #order #word
- Definability in the Infix Order on Words (OVK, VLS), pp. 454–465.