Long description: heatstencil
Alt text: A grid diagram shows three points labeled at j-1, j, and j+1 along a horizontal line, with arrows indicating a relationship between the points at level n and level n+1.
This description was generated by AI and has not been verified by a human. If you spot an error, please use the feedback link below.
- The image displays a grid structure representing discrete points across two levels, labeled with indices j-1, j, and j+1 for the horizontal positions and n and n+1 for the vertical levels.
- At the level labeled 'n', there are three solid black filled circles at the positions j-1, j, and j+1.
- At the level labeled 'n+1', there is a single circle at the position j, which is drawn with a dashed outline and contains a small circle, indicating a specific location.
- Arrows are drawn connecting the points. From the solid black circle at (j-1, n) and the solid black circle at (j+1, n), arrows point up and towards the center location at (j, n+1).
- Additionally, a large double-headed arrow is drawn connecting the solid black circle at (j, n) to the location at (j, n+1), suggesting a direct relationship or calculation between these two points.