Step-by-Step Linear Algebra Tatsuya Tsukamoto Gakujutsu Tosho Publishing There was a single instance of pencil writing on one page, but it has been erased. There are no markings from highlighters, etc. This item has been stored at home. Please refrain from purchasing if you are overly concerned about condition. I am sometimes away on business trips. If you need the item urgently, please notify me via comment before purchasing.