Equation 3 · Part 2 · How Post-CMOS, Neuromorphic, Photonic, and Quantum AI Compute Actually Works
Symbol i
What this part means
the cell at row.
Its job in the formula
i appears in the bound of this sum. The bound states where the repeated operation starts, ends, or which values it includes.
Full expression→Symbol i→Article meaning
Where the article explains it
By Ohm’s law, the cell at row i and column j draws a current times its conductance j.
The passage around this formula
The multiplication step follows directly from two textbook circuit laws. Apply a voltage simultaneously to each row i, representing the i-th component of an input vector. By Ohm’s law, the cell at row i and column j draws a current times its conductance j. By Kirchhoff’s current law, every current flowing into a given column sums automatically on that column’s wire, so the total current collected at the…
Learn the underlying idea
A variable is a named place for a value. Its letter is a local label: x can mean position in one formula and a data point in another.
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Sources cited in the surrounding passage
These citations provide research context; check each source for the exact claim it supports.