{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,9]],"date-time":"2026-01-09T03:10:52Z","timestamp":1767928252323,"version":"3.49.0"},"reference-count":0,"publisher":"World Scientific Pub Co Pte Lt","issue":"03","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Int. J. Found. Comput. Sci."],"published-print":{"date-parts":[[1996,9]]},"abstract":"<jats:p> A new class of languages, called multi-push-down (mpd), that generalize the classical context-free (cf, or Chomsky type 2) ones is introduced. These languages preserve some important properties of cf languages: a generalization of the Chomsky-Sch\u00fctzenberger homomorphic characterization theorem, the Parikh theorem and a \u201cpumping lemma\u201d are proved. Multi-push-down languages are an AFL. Their recognizers are automata equipped with a multi-push-down tape. Multi-push-down languages form a hierarchy based on the number of push-down tapes. <\/jats:p>","DOI":"10.1142\/s0129054196000191","type":"journal-article","created":{"date-parts":[[2004,9,6]],"date-time":"2004-09-06T11:50:09Z","timestamp":1094471409000},"page":"253-291","source":"Crossref","is-referenced-by-count":67,"title":["MULTI-PUSH-DOWN LANGUAGES AND GRAMMARS"],"prefix":"10.1142","volume":"07","author":[{"given":"LUCA","family":"BREVEGLIERI","sequence":"first","affiliation":[{"name":"Dipartimento di Elettronica e Informazione, Milano, Piazza Leonardo Da Vinci 32, 20133 Milano, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"ALESSANDRA","family":"CHERUBINI","sequence":"additional","affiliation":[{"name":"Dipartimento di Matematica, Politecnico di Milano, Piazza Leonardo Da Vinci 32, 20133 Milano, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"CLAUDIO","family":"CITRINI","sequence":"additional","affiliation":[{"name":"Dipartimento di Matematica, Politecnico di Milano, Piazza Leonardo Da Vinci 32, 20133 Milano, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"STEFANO CRESPI","family":"REGHIZZI","sequence":"additional","affiliation":[{"name":"Dipartimento di Elettronica e Informazione, Milano, Piazza Leonardo Da Vinci 32, 20133 Milano, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"219","published-online":{"date-parts":[[2011,11,20]]},"container-title":["International Journal of Foundations of Computer Science"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.worldscientific.com\/doi\/pdf\/10.1142\/S0129054196000191","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2019,8,7]],"date-time":"2019-08-07T00:41:37Z","timestamp":1565138497000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.worldscientific.com\/doi\/abs\/10.1142\/S0129054196000191"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1996,9]]},"references-count":0,"journal-issue":{"issue":"03","published-online":{"date-parts":[[2011,11,20]]},"published-print":{"date-parts":[[1996,9]]}},"alternative-id":["10.1142\/S0129054196000191"],"URL":"https:\/\/doi.org\/10.1142\/s0129054196000191","relation":{},"ISSN":["0129-0541","1793-6373"],"issn-type":[{"value":"0129-0541","type":"print"},{"value":"1793-6373","type":"electronic"}],"subject":[],"published":{"date-parts":[[1996,9]]}}}