Equation 26 · Part 7 · The Real Economics of Shipping a Model to a Device
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
U is the least discussed term in this accounting and, at fleet scale, sometimes the largest. It can be approximated as . the number of devices in the fleet, times the bytes pushed to each device per update, times the price per byte of moving that data. Amazon’s published CloudFront pricing states data transfer out to the internet at $0.085 per gigabyte for the first nine terabytes per month in the United States, Mexico and Canada tier, after a free first terabyte [ 14 ] . As an illustrative calculation only, using that public list price rather than any negotiated enterprise rate: a modest 200-megabyte delta update pushed to a fifty-million-device fleet is ten million…
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 surrounding passage
These citations provide research context; check each source for the exact claim it supports.