Title: Romanization of Bulgarian Content: The Streamlined System for the Romanization of Bulgarian is a system of transliteration of the Bulgarian alphabet created by Lyubomir Ivanov in the Institute of Mathematics and Informatics at the Bulgarian Academy of Sciences in 1995,L.L. Ivanov, Toponymic Guidelines for Antarctica, Antarctic Place- names Commission of Bulgaria, Sofia, 1995.Inventaire des outils de romanisation. Bibliothèque et Archives Canada. Ottawa 2006. (2019 edition, in English)G. Selvelli. Su alcuni aspetti ideologici dei sistemi di traslitterazione degli alfabeti cirillici nei Balcani. Studi Slavistici XII (2015). pp. 159–180. (in Italian) which is defined by the following table:M. Gaidarska, The Current State of the Transliteration of Bulgarian Names into English in Popular Practice, Contrastive Linguistics, XXII, 1998, 112, pp. 69-84. L.L. Ivanov, On the Romanization of Bulgarian and English, Contrastive Linguistics, XXVIII, 2003, 2, pp. 109-118. ; Errata, id., XXIX, 2004, 1, p. 157.Andreev A., I. Derzhanski eds. Bulgarian Academy of Sciences: Institute of Mathematics and Informatics, founded 1947. Sofia: Multiprint Ltd., 2007. 64 pp. (Bilingual publication in Bulgarian and English)  ==Invertibility== The system is not invertible, for А, Ж, Й, Ц, Ш, Щ, Ю, Я are transliterated in the same way as are Ъ, ЗХ, Ь, ТС, СХ, ШТ, ЙУ, ЙА respectively. An auxiliary, invertible variant of the system without the ИЯ-exception rule is proposed by L. Ivanov, D. Skordev and D. Dobrev to be used in those special cases when the exact retrieval of Bulgarian words from their Romanized forms is a priority, with Cyrillic letters and combinations of letters Ъ, Ь, ЗХ, ЙА, ЙУ, СХ, ТС, ТШ, ТЩ, ШТ, ШЦ transliterated as `A, `Y, Z|H, Y|A, Y|U, S|H, T|S, T|SH, T|SHT, SH|T, SH|TS respectively.L. Ivanov, D. Skordev and D. Dobrev. The New National Standard for the Romanization of Bulgarian. Mathematica Balkanica. New Series Vol. 24, 2010, Fasc. 1-2. pp.121-130. In order to ensure full invertibility of the system, including the case of the ИЯ-exception rule, one may transliterate word-final -ИА as I|A rather than IA. The plain streamlined transliteration word form could be retrieved from its invertible variant by simply removing the additional symbols ` and |. ==Comparison with other systems== The Streamlined System is based on an English-oriented transliteration, taking advantage of the global lingua franca role of English. A similar shift towards English-oriented transliteration is observed in the case of other Cyrillic alphabets such as RussianOrdinance N 1047 of 31.12.2003, Ministry of Interior of the Russian Federation. (in Russian) and Ukrainian,Resolution of the Ukrainian Commission on the Issue of Legal Terminology. Record No. 2 of 19.04.1996. (in Ukrainian)Ordinance N 55 of the Cabinet of Ministers of Ukraine “Regulation of the Latin transliteration of the Ukrainian alphabet” of 27 January 2010. (in Ukrainian) and to some extent Macedonian.D. Georgievski, How to Romanize the Cyrillic alphabet, Globus Weekly, issue 70, 19 August 2008. (in Macedonian)Omniglot: Macedonian language, alphabet and pronunciation The Streamlined System is similar to the old 1952 BGN/PCGN System for the Romanization of Bulgarian, which had been official in the USA and the United Kingdom until 2013. The latter however transliterates the Cyrillic letters Х, Ь and Ъ as KH, ’ (apostrophe) and Ŭ, while the former uses H, Y and A instead.USBGN, Romanization Systems and Roman-Script Spelling Conventions, 1994, pp.15-16. Another similar system not adopted for official use in Bulgaria is that of A. Danchev, M. Holman, E. Dimova and M. Savova, which transliterates the Cyrillic letters У and Ъ by OU and U respectively, while the Streamlined System uses U and A for this purpose. Furthermore, the latter system transliterates the digraphs АЙ•ай, ЕЙ•ей, ОЙ•ой and УЙ•уй by AI•ai, EI•ei, OI•oi and OUI•oui instead of AY•ay, EY•ey, OY•oy and UY•uy respectively.A. Danchev, M. Holman, E. Dimova, M. Savova. An English Dictionary of Bulgarian Names: Spelling and Pronunciation. Sofia, Nauka i Izkustvo Publishers, 1989. 288 pp. ==Related pages== * Transliteration * Bulgarian language * Cyrillic alphabet