Title
Chislennoe reshenie lineynykh integral'nykh uravneniy: Primenenie predobuslavlivateley dlya povysheniya skorosti skhodimosti ite,Used
Delivery time: 8-12 business days (International)
Integral'nye uravneniya v sovokupnosti s chislennymi metodami ikh resheniya yavlyayutsya moshchnym sredstvom issledovaniya razlichnykh zadach iz takikh oblastey matematicheskoy fiziki, kak teoriya uprugosti, akustika, gidrodinamika, elektrodinamika. Chislennoe reshenie lineynogo integral'nogo uravneniya vtorogo roda proizvoditsya putem konechnomernoy approksimatsii sistemoy lineynykh algebraicheskikh uravneniy. V sluchae, esli obuslovlennost' poluchennoy sistemy vysoka, skhodimost' iteratsionnykh metodov ee resheniya okazyvaetsya ochen' medlennoy. Eto mozhet ne sostavlyat' vazhnosti v razovykh vychisleniyakh, odnako stanovitsya aktual'nym, kogda trebuetsya mnogokratnoe reshenie uravneniya. Tak byvaet, k primeru, pri reshenii obratnykh zadach ili v sluchae resheniya nelineynykh uravneniy s ispol'zovaniem linearizatsii. Dlya ponizheniya obuslovlennosti sistemy vypolnyaetsya ee podgotovka putem umnozheniya na vspomogatel'nuyu matritsu (predobuslavlivatel', preconditioner), obladayushchuyu svoystvami, v chemto blizkimi k svoystvam obratnoy matritsy sistemy. V rabote rassmatrivayutsya predobuslavlivateli, orientirovannye na chislennoe reshenie lineynykh integral'nykh uravneniy vtorogo roda i osnovannye na idee gruboy approksimatsii obratnogo operatora.
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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.