Riemann matrix

From Halopedia, the Halo wiki

This article is about the AI component. For the AI transport housing, see Armored matrix.

The Riemann cycling-thought matrix is a central component in UNSC artificial intelligence constructs. It contains a code directory, where all the impulses in an AI's mind exist; as such, it is effectively an AI's "brain". The matrix is not a physical object itself; rather it is a program, allowing the AI to be stored in various forms of hardware, including a data center's nano-assemblage[1] or a data crystal chip for mobility.


Some AIs have personal fail-safes. Dr. Halsey stated that not all AI have such a fail safe, rather, only the important ones.[2] In case of rampancy or other danger to humans caused by the AI, the fail safe can be activated. It works by generating a pulse beam of high frequency ultraviolet light in the Riemann matrix, destroying the higher thought functions of the AI, effectively erasing it. It is unknown how common this information is since James Ackerson's AI Araqiel failed to recognize the fail safe. This indicates that the information is kept secret from the AIs for obvious reasons.[3]

The matrix fail-safe was used by Dr. Halsey to shut down both Araqiel and Kalmiya.[2]

Method of function[edit]

Because "smart" AIs are essentially copied human minds, the Riemann matrix is likely to be a software model of the human brain, similar to real-life proposals to create AI. The information stored in the matrix is, in essence, models of what happens inside human neurons. Each piece of the matrix is connected with others, allowing currents similar to those inside a human brain.

The matrix's name is probably a result of a non-linear nature (Riemann was a 19th century mathematician who made several breakthroughs in non-linear geometry.[4])

A Forerunner Durance, used to contain the essence of a composed individual, was noted by Dr. Halsey as exhibiting remarkable similarities to a UNSC AI matrix.[5]

List of appearances[edit]


  1. ^ Halo: Contact Harvest, page 182
  2. ^ a b Halo: First Strike, page 135
  3. ^ Halo: First Strike, page 128
  4. ^ Wikipedia: Bernhard Riemann
  5. ^ Spartan OpsS1E5 Memento Mori