Equation 1 · Part 8 · One Model, Many Modalities: What Multimodal Systems Actually Share
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
For images the dominant answer is patchification, introduced at scale by the Vision Transformer: cut the image into a grid of non-overlapping square patches, flatten each, and project it linearly into the model’s embedding dimension, so that a pure transformer applied directly to sequences of image patches performs competitively with convolutional networks when pre-trained on enough data [ 2 ] . The token count follows immediately from the geometry, . for an image of height H and width W at patch size P . The quadratic relationship is the entire practical story of image tokenisation. Halving the patch size quadruples the sequence, and attention cost grows faster still.…
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.