Xiangshu lun 象數論 / wumingshi 無名氏.
In: Yesuhui Luoma dang'anguan Ming-Qing Tianzhujiao wenxian 耶穌會羅馬檔案館明清天主教文獻 / Edited by Nicolas Standaert [鐘鳴旦] [and] Adrian Dudink [杜鼎克]. Reproduction of original text in vol. 6 of this collection. 

Jap-Sin II, 166.
Xiangshu lun 象數論.
By Xiong Sanba 熊三拔 (Sabbatino de Ursis, 1575–1620).
Manuscript (incomplete), one juan, one ce; written on Chinese paper with red squares. 25 x 15.5 cm.

The cover bears an inscription in Portuguese: “Do P. Sabbatino de Ursis sobre o Ye kim.”

There are nine columns in each half folio with twenty characters to each column. The text, which is incomplete, consists of twenty-one unnumbered folios (including the covers) and contains illustrations.
The author of the manuscript is not given. However, in folio 1, column 4, there is a remark : Yougangzi yue 有綱子曰. Now Yougang is the zi of Sabbatino de Ursis, which clearly indicates that he is the author. This title does not appear in Pfister or elsewhere.
The book, written in dialogue form, begins with the objection that in China the teaching of the savants is based on moral problems and not on God or on mathematical signs. To this the reply is that the Golden Mean [i.e. Zhongyong 中庸] (one of the Four Books in the Chinese classics) begins with the service of God. The savants observed the heavenly law and expressed it in writing and by diagrams. Thus, one practices virtues according to the dictate of the heavenly [Lord] and one governs by divine law without intervention of the impetuous human self.
The treatise then goes on to discuss the philosophy of mathematics, beginning from the point which is the centre of the Taiji 太極 (the Absolute), as was indicated by the Song philosophers. It then goes on to discuss the line, the surface and tries to refute the theory of Wuji 無極 and Taiji.
Source: Albert Chan, S.J., Chinese Books and Documents in the Jesuit Archives in Rome, p. 454.