PROBLEM Part 1. The drawing below shows a Hasse diagram for a partial order on the set {A, B, C, D, E, F, G, H, I, J} E Figure 3: A Hasse diagram shows 10 vertices and 8 edges. The vertices, rep- resented by dots, are as follows: vertex J; vertices H and I are aligned vertically to the right of vertex J; vertices A, B, C, D, and E forms a closed loop, which is to the vertex F is inclined downward to the right of vertex E. The edges, represented by line segments, between the vertices are as follows: Vertex J is connected to no vertex; a vertical edge connects vertices H and I; a vertical edge connects vertices B and C; and 6 inclined edges connect the following vertices, A and B, C and D, D and E, A and E, E and G, and E and F. (a) What are the minimal elements of the partial order? (b) What are the maximal elements of the partial order? (c) Which of the following pairs are comparable? (A, D), (J, F ), (B, E), (G, F ), (D, B), (C, F ), (H, I), (C, E)

Advanced Engineering Mathematics
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Chapter2: Second-order Linear Odes
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**Problem 7**

**Part 1.** The drawing below shows a Hasse diagram for a partial order on the set {A, B, C, D, E, F, G, H, I, J}.

*Figure 3: A Hasse diagram shows 10 vertices and 8 edges. The vertices, represented by dots, are as follows: vertex J; vertices H and I are aligned vertically to the right of vertex J; vertices A, B, C, D, and E form a closed loop, which is to the right of vertices H and I; vertex G is inclined upward to the right of vertex E; and vertex F is inclined downward to the right of vertex E. The edges, represented by line segments, between the vertices are as follows: Vertex J is connected to no vertex; a vertical edge connects vertices H and I; a vertical edge connects vertices B and C; and 6 inclined edges connect the following vertices, A and B, C and D, D and E, A and E, E and G, and E and F.*

(a) What are the minimal elements of the partial order?

(b) What are the maximal elements of the partial order?

(c) Which of the following pairs are comparable?

\[
(A, D), (J, F), (B, E), (G, F), (D, B), (C, F), (H, I), (C, E)
\]

**Part 2.** Each relation given below is a partial order. Draw the Hasse diagram for the partial order.

(a) The domain is {3, 5, 6, 7, 10, 14, 20, 30, 60}. \( x \leq y \) if \( x \) evenly divides \( y \).
Transcribed Image Text:**Problem 7** **Part 1.** The drawing below shows a Hasse diagram for a partial order on the set {A, B, C, D, E, F, G, H, I, J}. *Figure 3: A Hasse diagram shows 10 vertices and 8 edges. The vertices, represented by dots, are as follows: vertex J; vertices H and I are aligned vertically to the right of vertex J; vertices A, B, C, D, and E form a closed loop, which is to the right of vertices H and I; vertex G is inclined upward to the right of vertex E; and vertex F is inclined downward to the right of vertex E. The edges, represented by line segments, between the vertices are as follows: Vertex J is connected to no vertex; a vertical edge connects vertices H and I; a vertical edge connects vertices B and C; and 6 inclined edges connect the following vertices, A and B, C and D, D and E, A and E, E and G, and E and F.* (a) What are the minimal elements of the partial order? (b) What are the maximal elements of the partial order? (c) Which of the following pairs are comparable? \[ (A, D), (J, F), (B, E), (G, F), (D, B), (C, F), (H, I), (C, E) \] **Part 2.** Each relation given below is a partial order. Draw the Hasse diagram for the partial order. (a) The domain is {3, 5, 6, 7, 10, 14, 20, 30, 60}. \( x \leq y \) if \( x \) evenly divides \( y \).
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