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Theory and Modern Applications

Figure 4 | Advances in Difference Equations

Figure 4

From: The divergence theorem of a triangular integral

Figure 4

Two kinds of the finite area element of a lower-left piece. Two kinds of finite area element vectors Δ k 2 σ k , j → and Δ j 2 σ k , j → in (3.4) shown in Figure 3 are introduced as </p><p></p><p> for j=1,2,…,k and k=1,2,…,n.

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