Equation 5 · Part 2 · Claude Code, From First Principles: The Agentic Loop, Permissions, and What Actually Executes
subscript
subscript
What this part means
The lower label selects a particular version, component, or indexed member of the quantity. For example, x₀ and xₜ can be values at different positions.
Its job in the formula
A subscript distinguishes a version, component, step, or member of a quantity. It does not automatically mean multiplication.
Full expression→subscript→Article meaning
The passage around this formula
Let be the context available to the model at step t : system instructions, conversation so far, file contents, tool outputs. The model is a policy that, given , emits either a final answer or a tool call :
Learn the underlying idea
A subscript is a label attached below a symbol. It often selects a time step, component, category, or member of a sequence.
Open the illustrated subscripts: which member of a family? guide →
Sources cited in the article section
- [2] How Claude Code works ↗
- [11] Dive into Claude Code: The Design Space of Today's and Future AI Agent Systems ↗
These citations provide research context; check each source for the exact claim it supports.