Based on Ivan Marcus’s concept of “open book” and considerations on medieval Ashkenazic concepts of authorship, the present article inquires into the circumstances surrounding the production of Sefer Arugat ha-Bosem, a collection of piyyut commentaries written or compiled by the thirteenth-century scholar Abraham b. Azriel. Unlike all other piyyut commentators, Abraham ben Azriel inscribed his name into his commentary and claims to supersede previous commentaries, asserting authorship and authority. Based on the two different versions preserved in MS Vatican 301 and MS Merzbacher 95 (Frankfurt fol. 16), already in 1939 Ephraim E. Urbach suggested that Abraham b. Azriel might have written more than one edition of his piyyut commentaries. The present reevaluation considers recent scholarship on concepts of authorship and “open genre” as well as new research into piyyut commentary. To facilitate a comparison with Marcus’s definition of “open book,” this article also explores the arrangement and rearrangement of small blocks of texts within a work.

基于伊万·马库斯（Ivan Marcus）的“开放书”概念以及对中世纪阿什肯纳兹（Ashkenazic）著作权概念的考虑，本文探讨了围绕塞弗· 阿鲁加特·哈·博塞姆（Sefer Arugat ha-Bosem）生产的情况，由13世纪学者亚伯拉罕b。撰写或汇编的pyyyut评论集。Azriel。与所有其他pyyyut评论员不同，亚伯拉罕·本·阿兹里耶尔（Abraham ben Azriel）将自己的名字铭刻在他的评论中，并声称将取代以前的评论，维护作者和权威。根据MS Vatican 301和MS Merzbacher 95（法兰克福fol。16）中保存的两个不同版本，以法莲E. Urbach已于1939年提出亚伯拉罕b。Azriel可能已经撰写了不止一版的piyyut评论。本次重新评估考虑了关于作者身份和“开放体裁”概念的最新学术研究以及对pyyyut评论的新研究。为了便于与Marcus对“打开的书”的定义进行比较，本文还探讨了作品中小块文本的排列和重新排列。