{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,20]],"date-time":"2026-04-20T13:08:05Z","timestamp":1776690485817,"version":"3.51.2"},"reference-count":28,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2006,7,6]],"date-time":"2006-07-06T00:00:00Z","timestamp":1152144000000},"content-version":"vor","delay-in-days":186,"URL":"http:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"funder":[{"DOI":"10.13039\/501100003407","name":"Ministero dell\u2019Istruzione, dell\u2019Universit\u00e0 e della Ricerca","doi-asserted-by":"crossref","id":[{"id":"10.13039\/501100003407","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/100009104","name":"University of Modena and Reggio Emilia","doi-asserted-by":"crossref","id":[{"id":"10.13039\/100009104","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["International Journal of Mathematics and Mathematical Sciences"],"published-print":{"date-parts":[[2006,1]]},"abstract":"<jats:p>We construct a Heegaard diagram of genus three for the real\nprojective 3\u2010space, which has no waves and pairs of complementary\nhandles. The first example was given by Im and Kim but our diagram\nhas smaller complexity. Furthermore the proof presented here is\nquite different to that of the quoted authors, and permits also to\nobtain a simple alternative proof of their result. Examples of\nirreducible Heegaard diagrams of certain connected sums complete\nthe paper.<\/jats:p>","DOI":"10.1155\/ijmms\/2006\/53135","type":"journal-article","created":{"date-parts":[[2006,8,2]],"date-time":"2006-08-02T19:13:45Z","timestamp":1154546025000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["A note on irreducible Heegaard diagrams"],"prefix":"10.1155","volume":"2006","author":[{"given":"Alberto","family":"Cavicchioli","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fulvia","family":"Spaggiari","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2006,7,6]]},"reference":[{"key":"e_1_2_1_1_2","doi-asserted-by":"publisher","DOI":"10.2307\/1998049"},{"key":"e_1_2_1_2_2","doi-asserted-by":"publisher","DOI":"10.1007\/BF01830977"},{"key":"e_1_2_1_3_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0166\u20108641(97)00093\u2010X"},{"key":"e_1_2_1_4_2","doi-asserted-by":"publisher","DOI":"10.2307\/2042304"},{"key":"e_1_2_1_5_2","doi-asserted-by":"publisher","DOI":"10.1007\/BF02188181"},{"key":"e_1_2_1_6_2","doi-asserted-by":"publisher","DOI":"10.1007\/978-94-017-0699-5"},{"key":"e_1_2_1_7_2","doi-asserted-by":"publisher","DOI":"10.2307\/2043490"},{"key":"e_1_2_1_8_2","volume-title":"3-Manifolds","author":"Hempel J.","year":"1976"},{"key":"e_1_2_1_9_2","unstructured":"HodgsonC. 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