Title
The Calculus Of Friendship: What A Teacher And A Student Learned About Life While Corresponding About Math,New
Delivery time: 8-12 business days (International)
The Calculus Of Friendship Is The Story Of An Extraordinary Connection Between A Teacher And A Student, As Chronicled Through More Than Thirty Years Of Letters Between Them. What Makes Their Relationship Unique Is That It Is Based Almost Entirely On A Shared Love Of Calculus. For Them, Calculus Is More Than A Branch Of Mathematics; It Is A Game They Love Playing Together, A Constant When All Else Is In Flux. The Teacher Goes From The Prime Of His Career To Retirement, Competes In Whitewater Kayaking At The International Level, And Loses A Son. The Student Matures From High School Math Whiz To Ivy League Professor, Suffers The Sudden Death Of A Parent, And Blunders Into A Marriage Destined To Fail. Yet Through It All They Take Refuge In The Haven Of Calculusuntil A Day Comes When Calculus Is No Longer Enough.Like Calculus Itself, The Calculus Of Friendship Is An Exploration Of Change. It'S About The Transformation That Takes Place In A Student'S Heart, As He And His Teacher Reverse Roles, As They Age, As They Are Buffeted By Life Itself. Written By A Renowned Teacher And Communicator Of Mathematics, The Calculus Of Friendship Is Warm, Intimate, And Deeply Moving. The Most Inspiring Ideas Of Calculus, Differential Equations, And Chaos Theory Are Explained Through Metaphors, Images, And Anecdotes In A Way That All Readers Will Find Beautiful, And Even Poignant. Math Enthusiasts, From High School Students To Professionals, Will Delight In The Offbeat Problems And Lucid Explanations In The Letters.For Anyone Whose Life Has Been Changed By A Mentor, The Calculus Of Friendship Will Be An Unforgettable Journey.
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Shipping & Returns
Shipping
We ship your order within 2–3 business days for USA deliveries and 5–8 business days for international shipments. Once your package has been dispatched from our warehouse, you'll receive an email confirmation with a tracking number, allowing you to track the status of your delivery.
Returns
To facilitate a smooth return process, a Return Authorization (RA) Number is required for all returns. Returns without a valid RA number will be declined and may incur additional fees. You can request an RA number within 15 days of the original delivery date. For more details, please refer to our Return & Refund Policy page.
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If you believe you have received a defective product, or are experiencing any problems with your product, please contact us.
This warranty strictly does not cover damages that arose from negligence, misuse, wear and tear, or not in accordance with product instructions (dropping the product, etc.).
Warranty
We provide a 2-year limited warranty, from the date of purchase for all our products.
If you believe you have received a defective product, or are experiencing any problems with your product, please contact us.
This warranty strictly does not cover damages that arose from negligence, misuse, wear and tear, or not in accordance with product instructions (dropping the product, etc.).
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Secure Payment
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
We accept payments with :
Visa, MasterCard, American Express, Paypal, Shopify Payments, Shop Pay and more.