Let σsgp := (·) be a signature, where · is a binary operation symbol. A σsgp-structure is called a semigroup if · is interpreted as an associative binary operation, i.e. for all x, y, z,  x ·(y · z) = (x · y) · z. a. Give an example of a σsgp-structure that is not a semigroup. b. Give an example of a semigroup that is not a group (i.e. the interpretation of · is such that there does not exist an inverse or identity).

Q: A Associative (No), commutative (No), identity (No), zero (No) Associative (Yes), commutative (Yes),…

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Q: 5. Show that M:= {ECR: E is countable or E is countable} is a o-algebra.

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Q: Suppose that Z10 and Z15 are both homomorphic images of a finitegroup G. What can be said about |G|?…

A: Given: Z10 and Z15 are both homomorphic images of a finite group G. We have to tell about G and…

Q: 8. Let X = {1,2,..., 15}, A = {1, 2, 3, 4, 5, 6, 7}, B = {5, 6, 7, 8, 9}, and C = {2, 3, 6, 8, 10,…

A: Please find the attachment I use the definition of sigma algebra

Q: Which is not a σ-algebra of S = {0, 2, 4, 5, 7}? (a) {S, Φ, {0}, {2}, {0,2}, {4,5,7}, {0,4,5,7},…

A: Solution: The criteria for a σ-algebra $ are,    1) Φ€ $   2) If A € $, then Ac must be in $.   3)…

Q: What is the difference of (e+fi)-(g+hi)

A: To find the difference of (e+f i ) -(g + h i )

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A: Given : The given set is  X = {a, b, c, d, e} To find : We have to create a σ-algebra from the set…

Q: Let (G,*) be a semigroup with identity e e G. Show that H = {a E G/a invertible} C G is a…

A: A set R is called a group with a binary operations * if it satisfies the given below conditions for…

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A: To draw the subfield lattices of  GF318 and GF230.

Q: Prove that in a Boolean Algebra, x.ỹ = 0 if and only if x. y = x .

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Q: Show that every element of GF(pn) can be written in the form ap forsome unique a in GF( pn).

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Q: Find all the automorphisms of C₁0 and write down a Cayley table for Aut(C10).

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Q: Make z tu subject in the form of

A: Given x2a2-y2b2=1 Since we know that z=x+iy and z¯=x-iy then x=z+z¯2 and y=z-z¯2i

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A: The given binary operation on N is defined as follows.

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Q: 1. Let S = {a, b, c), and let be the binary operation on S defined by the following table: 98 ★ a b…

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Q: 4. How many sets does the algebra A=(0,X, A, B,C,.....) contain? (This is the smallest algebra…

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Q: Each element in Z, except 0, has an inverse (Z,*) is commutative.

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Q: (a) Let * be defined on Z by a * b = 2ab. Determine whether the binary operator defined is…

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A: The number of relations from set A to the same Set A is The set of all the subsets of A×A . So the…

Q: Let Zn denote the set of integers {0, 1, ..., n-1}. Let be a binary operator on Z, such that a. b =…

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Q: Prove that the intersection of any number of o-algebras is a o-algebra.

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Q: Let 2 be the universal set and let G= p(2) the power set of 2 Define the follov operations X+Y =…

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Q: Let G =U (7)OZ, . The order of G is O 7 О 35 О 1 30

A: In U(n) which unitary group of order n, if n is prime number that group order will be n-1. Here in…

Q: Show that every element of GF(pn) can be written in the form ap forsome unique a in GF( pn).

A: Given: GFpn. To show: Every element of GFpn can be written in the form ap for some unique a in GFpn.

Q: Define the binary operator  ⊗⊗ by:     a⊗b=a2+b+4a⊗b=a2+b+4  Find each of the following:…

A: The given question can be solved as shown in step2.

Q: show that the binary structures {Q,+} with {Q,+} where (x)=x/2 for xEQ are isomorphic

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A potential method of analysis

The complexity of the algorithm model emphasizes the potential method. This method is useful for examining a data structure's amortized time and space complexity.