Title
GRADIENT OF TIME AND PARTIALS DIFFERENTIALS EQUATIONS: GRADIENT OF TIME : ANALYTIC METHOD TO SOLVE PARTIALS DIFFERENTIALS EQUATI,Used
Delivery time: 8-12 business days (International)
The gradient of time is in a physics mind the "time's elasticity in the space referential". This analytic method allows us to solve partials differentials equations as these of Navier/Stokes in fluids mechanics , this of Schrodinger in quantum mechanics , this of Fourier about heat propagation ,or these of Maxwell and many others... Our technic gives to physicists, some advantages in the elaboration of the good physics theories ,which explain each equation's solution. In effects , all partials differentials equation have "waves" as solutions. The gradient of time let us believe that, all wave is in space and time , a progressive sum of dilatations and contractions of our universe. This book has been written , to present and proove that the gradient of time in its theory and principle , is a good and right technic to solve in a physics and in a mathematics minds , all the partials differentials equations.
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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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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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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.