Equation 5 · Part 2 · A History of Anthropic and the Claude Model Line
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
where C() is the model’s evaluated capability on a specific threat class, is the threshold defining ASL level k , and is the security and deployment standard the policy requires once that threshold is crossed. This is worth writing out because a threshold-triggered commitment is only meaningful if it is sometimes not satisfied by default — otherwise it is a description of business as usual, not a constraint. Whether the policy binds in practice is therefore an empirical question about later events, addressed below.
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
These citations provide research context; check each source for the exact claim it supports.