Title
Generation and validation of some BIBDs,Used
Delivery time: 8-12 business days (International)
Validation and classification of designs are important aspects of combinatorial designs and several researches have been carried out in this area. A Balanced Incomplete Block Design (BIBD) denoted by (B(v,b,r,k,,?) ) is an arrangement of ? elements into b blocks so that each block contains exactly k distinct elements and each element occurs in r blocks such that every combination of two elements occurs together in exactly ? blocks. In this study Codes written in R and Gendex were used for the generation and further classification of some BIB designs as well as crossvalidation of the designs
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Shipping & Returns
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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.