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Equation 17 · Part 4 · Dense, Sparse, and Distilled: Comparing Approaches to Frontier Model Capacity

subscript

Na=NN_a = N
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.

The passage around this formula

What sparse routing breaks: NaN_a = N . Best when training compute is the binding constraint and memory is not.

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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.