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  2. Murder of Rachael Runyan - Wikipedia

    en.wikipedia.org/wiki/Murder_of_Rachael_Runyan

    Although Rachael's murder is an unsolved case, Lieutenant Phil Olmstead, who first answered Elaine Runyan's frantic call for assistance following her daughter's abduction, [37] continually assured the Runyan family of the Sunset Police Department's determination to find Rachael's murderer or murderers.

  3. List of unsolved problems in computer science - Wikipedia

    en.wikipedia.org/wiki/List_of_unsolved_problems...

    What is the lowest possible average-case time complexity of Shellsort with a deterministic fixed gap sequence? Can 3SUM be solved in strongly sub-quadratic time, that is, in time O(n 2−ϵ) for some ϵ>0? Can the edit distance between two strings of length n be computed in strongly sub-quadratic time?

  4. Two Generals' Problem - Wikipedia

    en.wikipedia.org/wiki/Two_Generals'_Problem

    [1] [2] The Two Generals' Problem was the first computer communication problem to be proven to be unsolvable. [3] An important consequence of this proof is that generalizations like the Byzantine Generals problem are also unsolvable in the face of arbitrary communication failures, thus providing a base of realistic expectations for any ...

  5. Setagaya family murder - Wikipedia

    en.wikipedia.org/wiki/Setagaya_family_murder

    An analysis of Mikio Miyazawa's computer revealed that it had connected to the internet the morning after the murders from 1:18 a.m. to 1:23 a.m. Various news outlets have said the internet was connected again at around 10 a.m., around the time Yasuko's mother Haruko entered the house and discovered the murders, but it was reported by Nicolás ...

  6. Ricky McCormick's encrypted notes - Wikipedia

    en.wikipedia.org/wiki/Ricky_McCormick's_encrypted...

    [3] [6] Attempts by both the FBI's Cryptanalysis and Racketeering Records Unit (CRRU) and the American Cryptogram Association failed to decipher their meaning, and Ricky McCormick's encrypted notes are currently listed as one of CRRU's top unsolved cases, with McCormick's killer yet to be identified. [1]

  7. Travelling salesman problem - Wikipedia

    en.wikipedia.org/wiki/Travelling_salesman_problem

    1) An ant chooses a path among all possible paths and lays a pheromone trail on it. 2) All the ants are travelling on different paths, laying a trail of pheromones proportional to the quality of the solution. 3) Each edge of the best path is more reinforced than others. 4) Evaporation ensures that the bad solutions disappear.

  8. Murders of Lee Rotatori and Thomas Freeman - Wikipedia

    en.wikipedia.org/wiki/Murders_of_Lee_Rotatori...

    In an attempt to find answers, her employer and other local organizations put up rewards for thousands of dollars, but with no success. As a result, a cold case with no suspects or answers began and no suspects were revealed for decades. [1] In 2019, authorities submitted DNA evidence to Parabon NanoLabs in an attempt to identify a suspect.

  9. Two-phase commit protocol - Wikipedia

    en.wikipedia.org/wiki/Two-phase_commit_protocol

    [1] [2] [3] However, it is not resilient to all possible failure configurations, and in rare cases, manual intervention is needed to remedy an outcome. To accommodate recovery from failure (automatic in most cases) the protocol's participants use logging of the protocol's states.