A unique publication designed for those who want to pass the international exams in English (FCE, CAE, IELTS, TOEFL, TOEIC).

The Longman Dictionary of American English CD-ROM contains the complete contents of the Longman Dictionary of American English.

4 Levels: Elementary to Upper Intermediate

Extra English is a video course at elementary and pre-intermediate level (A2).

The reader who has mastered the core material acquires a strong background in elementary topology and will feel at home in the environment of abstract mathematics. With almost no prerequisites (except real numbers), the book can serve as a text for a course on general and beginning algebraic topology.

A unique publication designed for those who want to pass the international exams in English (FCE, CAE, IELTS, TOEFL, TOEIC).

* 212,000 words, phrases and meanings.
* 160 000 examples, including examples of academic papers (essays), showing how to use words.
* More than 10,000 synonyms, antonyms and derivatives of words.
* More than 1 000 Study Notes, on issue areas of vocabulary and grammar and prevent common mistakes.
* The only vocabulary, where isolated not only three thousand most common words spoken and written language, but words that are typical for an academic style.
* Section Essay Activator promotes the effective development of writing skills.
* Section Topic Activator will help to expand your vocabulary on topics traditionally offered to write an essay.
* More than 3 hours of practice to prepare for jobs in auditing
* The full contents of dictionaries Longman Exam Dictionary and the Longman Language Activator .

Homepage: _http://www.pearsonlongman.com

Concise work presents topological concepts in clear, elementary fashion without sacrificing their profundity or exactness. Author proceeds from basics of set-theoretic topology, through topological theorems and questions based on concept of the algebraic complex, to the concept of Betti groups.