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chore: clarifies that Q3 can be computed from Q1 as well #1461

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Mar 9, 2023
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chore: clarifies that Q3 can be computed from Q1 as well #1461

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clarifies that Q3 can be computed from Q1 as well
staheri14 Mar 9, 2023
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Merge branch 'main' into clarifies-q3-extension-logic
staheri14 Mar 9, 2023
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3 changes: 2 additions & 1 deletion docs/spec/nmt-wrapper.md
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Expand Up @@ -9,7 +9,8 @@ The [extended version][reedsolomon-link] is called extended data square, that is
Figure 1 provides an illustration of a sample data square and its extended version.
`Q0` corresponds to the original data square.
`Q1` and `Q2` represent the horizontal and vertical extensions of `Q0`, respectively.
`Q3` is the extension of `Q2` in the horizontal direction.
`Q3` is the horizontal extension of `Q2` or alternatively, it can be considered as the vertical extension of `Q1`.
Additional information about the extension logic can be found in the specifications of the [2D Reed-Solomon encoding scheme][reedsolomon-link].
<img src="https://raw.githubusercontent.com/celestiaorg/celestia-app/c09843d07d4c3842753138de96b304b4866e8f5d/specs/src/specs/figures/rs2d_extending.svg" alt="Figure 1. Extended Data Square." style="max-width: 50%; height: auto;">

Figure 1. `r` and `c` stand for row and column, respectively.
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