Remove item Thumbnail image Product Price Quantity Subtotal × The Singularity Is Near: When Humans Transcend Biology Ray Kurzweil, ISBN-13: 978-0670033843 $8.74 The Singularity Is Near: When Humans Transcend Biology Ray Kurzweil, ISBN-13: 978-0670033843 quantity $8.74 × Visual Differential Geometry and Forms: A Mathematical Drama in Five Acts by Tristan Needham, ISBN-13: 978-0691203706 $14.33 Visual Differential Geometry and Forms: A Mathematical Drama in Five Acts by Tristan Needham, ISBN-13: 978-0691203706 quantity $14.33 Coupon: Apply coupon Update cart Cart totals Subtotal $23.07 Total $23.07 Proceed to checkout