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0 In my java application, I am using Amazon SQS queue with 5 consumers(Ec2 instances). whenever a message is posted to queue, only one consumer should receive this message and other consumers shouldn't do anything. How to achieve this. java amazon-ec2 queue share | improve this question asked Jan 29 at 21:32 santro santro 1 "only one consumer should receive this mes...

0 $begingroup$ How can we derive the generators of the Discrete Heisnberg Group? Everyone seems to just state this as a given and never actually derive it from scratch. I'm looking for a (somewhat) elementary derivation group-theory group-presentation share | cite | improve this question edited Dec 21 '18 at 17:36 Shaun 9,789 11 36 84 asked Dec 18 '18 at 15:45 user371732 $endgroup$ ...