Consider the following two graphs: G1 V1 = {a,b,c,d,e, f, g} E1 = {{a,b}, {a,d},{b,c}, {b,d}, {b, e}, {b, f}, {c,g}, {d,e}, {e, f},{f,g}}. G2 V2 = {v1, v2, V3, V4, V5, V6, V7}, E2 = {{v1, V4}, {v1, v5}, {V1, 07}, {v2, V3}, {v2, 06}, {v3, v5}, {V3, v7},{V4, V5}, {U5, V6}, {v5, 07}} (a) Let f : G1 → G2 be a function that takes the vertices of Graph 1 to vertices of Graph 2. The function is given by the following table: b d f a e te | (x)f Does f define an isomorphism between Graph 1 and Graph 2? V5 V1 V6 V2 V3 V7 (b) Define a new function g (with g + f) that defines an isomor- phism between Graph 1 and Graph 2. (c) Is the graph pictured below isomorphic to Graph 1 and Graph 2? Explain.

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Chapter2: Second-order Linear Odes
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**Graph Isomorphism Exercise**

Consider the following two graphs:

**Graph 1 (G₁):**
- **Vertices (V₁):** \(\{a, b, c, d, e, f, g\}\)
- **Edges (E₁):** \(\{\{a, b\}, \{a, d\}, \{b, c\}, \{b, d\}, \{b, e\}, \{b, f\}, \{c, g\}, \{d, e\}, \{e, f\}, \{f, g\}\}\)

**Graph 2 (G₂):**
- **Vertices (V₂):** \(\{v_1, v_2, v_3, v_4, v_5, v_6, v_7\}\)
- **Edges (E₂):** \(\{\{v_1, v_4\}, \{v_1, v_5\}, \{v_1, v_7\}, \{v_2, v_3\}, \{v_2, v_6\}, \{v_3, v_5\}, \{v_3, v_7\}, \{v_4, v_5\}, \{v_5, v_6\}, \{v_5, v_7\}\}\)

**Tasks:**

**(a)** Let \( f : G₁ \rightarrow G₂ \) be a function that maps vertices of Graph 1 to vertices of Graph 2. The function is defined as:

| \(x\) | \(a\) | \(b\) | \(c\) | \(d\) | \(e\) | \(f\) | \(g\) |
|-------|-------|-------|-------|-------|-------|-------|-------|
| \(f(x)\) | \(v_4\) | \(v_5\) | \(v_1\) | \(v_6\) | \(v_2\) | \(v_3\) | \(v_7\) |

Does \( f \) define an isomorphism between Graph 1 and Graph 2?

**(b)** Define a new function \( g \) (such that \( g
Transcribed Image Text:**Graph Isomorphism Exercise** Consider the following two graphs: **Graph 1 (G₁):** - **Vertices (V₁):** \(\{a, b, c, d, e, f, g\}\) - **Edges (E₁):** \(\{\{a, b\}, \{a, d\}, \{b, c\}, \{b, d\}, \{b, e\}, \{b, f\}, \{c, g\}, \{d, e\}, \{e, f\}, \{f, g\}\}\) **Graph 2 (G₂):** - **Vertices (V₂):** \(\{v_1, v_2, v_3, v_4, v_5, v_6, v_7\}\) - **Edges (E₂):** \(\{\{v_1, v_4\}, \{v_1, v_5\}, \{v_1, v_7\}, \{v_2, v_3\}, \{v_2, v_6\}, \{v_3, v_5\}, \{v_3, v_7\}, \{v_4, v_5\}, \{v_5, v_6\}, \{v_5, v_7\}\}\) **Tasks:** **(a)** Let \( f : G₁ \rightarrow G₂ \) be a function that maps vertices of Graph 1 to vertices of Graph 2. The function is defined as: | \(x\) | \(a\) | \(b\) | \(c\) | \(d\) | \(e\) | \(f\) | \(g\) | |-------|-------|-------|-------|-------|-------|-------|-------| | \(f(x)\) | \(v_4\) | \(v_5\) | \(v_1\) | \(v_6\) | \(v_2\) | \(v_3\) | \(v_7\) | Does \( f \) define an isomorphism between Graph 1 and Graph 2? **(b)** Define a new function \( g \) (such that \( g
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