Symbol t
t is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.
Read this term in its guide →Published equation contexts
Why this formula appears here
Start with the smallest honest model. A tool is not a function in the mathematical sense, because it touches the world. Write it as a partial map from arguments and world-state to results and world-state: . Four things are named there, and each corresponds to a design decision that is usually made by accident.
Read the representative guide
Symbol A_t
the argument type : what shapes of input the tool accepts at all.
Read this term in its guide →Symbol Sigma
Sigma is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.
Read this term in its guide →How to interpret it
Read this expression with the definitions, units, and assumptions supplied by the article.
Research cited beside this formula
Published contexts (1)
A symbol can carry a different meaning in another article. Each occurrence keeps its own guide and term definitions.
Equation 1 · AI Agents & Systems
Typed Tools: Protocols as an Agent's Action Alphabet
This mathematical expression combines the displayed quantities; its precise role follows from the surrounding article text.
Start with the smallest honest model. A tool is not a function in the mathematical sense, because it touches the world. Write it as a partial map from arguments and world-state to results and world-state: . Four things are named there, and each corresponds to a design decision that is usually made by accident.
Meanings in this article
- : the argument type : what shapes of input the tool accepts at all.
- : the result type : what the caller is told.