XB consists of text books in Persian. The texts are in the pdf format. To view the pdf files, Adobe (Acrobat) reader 5 or later is needed. Adobe reader can be obtained from Adobe reader download.

Using, printing, and publishing these texts for non-commercial purposes is free, provided they are not altered in any sense (including text, style, and orthography). For any other use, author's permission is needed.

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XB-003 (2022/07/07) pdf
                    Classical mechanics

XB-002 (2016/08/20) pdf

XB-001 (2016/05/10) pdf
                    Linear algebra (3rd edition)