This book is intended to serve as a one-semester introductory course in number theory. Throughout the book a historical perspective has been adopted and emphasis is given to some of the subject's applied aspects; in particular the field of cryptography is highlighted. At the heart of the book are the major number theoretic accomplishments...

Hacking Secret Ciphers with Python not only teaches you how to write in secret ciphers with paper and pencil. This book teaches you how to write your own cipher programs and also the hacking programs that...

'Metonymy' is a type of figurative language used in everyday conversation, a form of shorthand that allows us to use our shared knowledge to communicate with fewer words than we would otherwise need. 'I'll pencil you in' and 'let me give you a hand' are both examples of metonymic language. Metonymy serves a wide...

Fearless Drawing is a fun and beautiful exercise and adventure book exploring how to rediscover the joy of drawing. There is a terrific fear attached to drawing, a frozen panic, a cry of "I can't draw!" Yet, embarking on these exciting drawing adventures will re-ignite the profound joy and artistic passion of drawing....

• From the author who brought you the first practical look at 3D printing with 3D Printing Blueprints
• Get a comprehensive coverage of the prototyping techniques you need to know to start printing your own...

Whether you prefer to snap shots on your smartphone or don’t ever leave home without your DSLR, chances are you have way more photos than you ever dreamed possible. Photoshop Elements 12 All-in-One For Dummies is here to...

• Import and organize your photos
...