I hope this book will be useful for those majoring in mathematics in university, as well as those who have a strong interest in mathematics. Please note that I have taken photos of only the "Preface" page (second photo) for your reference. If you would like to know more details, please feel free to ask. ■ Publisher: Kyoritsu Shuppan ■ Year of Publication: 1985 ■ Total Pages: 234 pages ■ Price: 2,200 yen My father had this book "sitting on the bookshelf" for a long time and was going to throw it away, but it looked like a very fine book, so I took it and put it up for sale, hoping someone would use it. The "mathematical content" itself doesn't change much over the years, and I think it can still be used almost as is. As you can see, it's a used book, so there is some deterioration in the cover and the paper quality inside, but the inside is so clean that I doubt if I was really studying at the time (lol). I have also looked through it again and confirmed that there are no writings, etc. (Please forgive me if I missed anything.) 【Special Offer】 At the same time, I am also selling about 10 other mathematics books. You can see them by tapping #数学専門書_kenshiro. I will consider a discount for those who purchase multiple books, so please feel free to consult with me in the comments.