Abstract: The problem to construct optimal conflict-avoiding codes of even lengths and the Hamming weight 3 is completely settled. On the contrary, it is still open for odd lengths. It turns out that ...

Ryanair’s low uptake for Prime underscores the limits of paid perks in a no-frills model, and shows that even the world’s most disciplined airlines can miscalculate demand. Ryanair has pulled the plug ...

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SCOTTSDALE, AZ — For more than a decade, Amazon Prime members could share their free shipping perks with people outside their household, but that option is now gone. As of October 1st, Amazon has ...

In early September, the online retail giant announced it would be ending its Prime Invitee Program that allowed Prime users to share their free shipping benefits with people who don’t share their home ...

WASHINGTON — Starting Wednesday, Oct. 1, Amazon is ending a program that allowed Prime members to share their free shipping benefits with people outside their household. In an update to its customer ...