The lectures adress to students and geometers who are not experts in the field, but who need to use blowups occasionally or who just want to have a good comprehension of them. References are scattered in the literature and mostly concentrate on only part of the story. This text is neither complete, but hints at least at the variety of properties, results and techniques which are related to blow...

short story is built on a single story that have a single impact and it is a short detail of human life.the length of the short story and the time to read does not take from the listener and the reader but a short time. and that is one of the updated arts that have emerged in the modern era and arabs did not know this kind of story in past ages and it has no roots in the heritage of storytellin...