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Recent questions tagged relations
3
votes
1
answer
91
GO Classes 2023 | Weekly Quiz 7 | Question: 14
Let $\text{N}^{+}$ denote the non-zero positive integers. Define a binary relation $\text{R}$ on $\text{N}^{+} \times \text{N}^{+}$ by $(m, n)\text{R}(s, t)$ if $\gcd(m, n) = \gcd(s, t).$ The binary relation $\text{R}$ is Reflexive Symmetric Transitive Not Transitive
GO Classes
asked
in
Set Theory & Algebra
Apr 14, 2022
by
GO Classes
372
views
goclasses_wq7
goclasses
set-theory&algebra
relations
multiple-selects
2-marks
2
votes
1
answer
92
GO Classes 2023 | Weekly Quiz 7 | Question: 15
Let $\text{N}^{+}_{2}$ denote the natural numbers greater than or equal to $2.$ Let $m\text{R}n$ if $\gcd(m, n) > 1.$ The binary relation $\text{R}$ on $\text{N}^{+}_{2}$ is Reflexive Symmetric Transitive Not Transitive
GO Classes
asked
in
Set Theory & Algebra
Apr 14, 2022
by
GO Classes
314
views
goclasses_wq7
goclasses
set-theory&algebra
relations
multiple-selects
2-marks
0
votes
1
answer
93
ZEAL test-series : Cardinality of relation!
I know that the number of equivalence relation is bell no. i.e 7th bell no. i.e. 877, but i am not able to find the cardinality of R! Please help!
Yashdeep2000
asked
in
Set Theory & Algebra
Mar 6, 2022
by
Yashdeep2000
671
views
equivalence-class
relations
1
vote
1
answer
94
conditional join, DBMS, projection operator
why don't we use the projection operator in conditional join?
raginibhayana
asked
in
Databases
Feb 15, 2022
by
raginibhayana
759
views
databases
relational-algebra
natural-join
relations
27
votes
5
answers
95
GATE CSE 2021 Set 1 | Question: 43
A relation $R$ is said to be circular if $a\text{R}b$ and $b\text{R}c$ together imply $c\text{R}a$. Which of the following options is/are correct? If a relation $S$ is reflexive and symmetric, then $S$ is an equivalence relation ... and circular, then $S$ is an equivalence relation. If a relation $S$ is transitive and circular, then $S$ is an equivalence relation.
Arjun
asked
in
Set Theory & Algebra
Feb 18, 2021
by
Arjun
8.0k
views
gatecse-2021-set1
multiple-selects
set-theory&algebra
relations
2-marks
2
votes
2
answers
96
UGC NET CSE | October 2020 | Part 2 | Question: 39
Consider the following properties: Reflexive Antisymmetric Symmetric Let $A=\{a,b,c,d,e,f,g\}$ and $R=\{(a,a), (b,b), (c,d), (c,g), (d,g), (e,e), (f,f), (g,g)\}$ be a relation on $A$. Which of the following property (properties) is (are) satisfied by the relation $R$? Only $i$ Only $iii$ Both $i$ and $ii$ $ii$ and not $i$
go_editor
asked
in
Mathematical Logic
Nov 20, 2020
by
go_editor
1.1k
views
ugcnetcse-oct2020-paper2
discrete-mathematics
set-theory&algebra
relations
1
vote
2
answers
97
NIELIT 2016 DEC Scientist B (IT) - Section B: 28
What is the possible number of reflexive relation on a set of $5$ elements? $2^{10}$ $2^{15}$ $2^{20}$ $2^{25}$
admin
asked
in
Set Theory & Algebra
Mar 31, 2020
by
admin
528
views
nielit2016dec-scientistb-it
discrete-mathematics
set-theory&algebra
relations
1
vote
1
answer
98
NIELIT 2017 July Scientist B (IT) - Section B: 21
The relation $\{(1,2),(1,3)(3,1),(1,1),(3,3),(3,2),(1,4),(4,2),(3,4)\}$ is Reflexive Transitive Symmetric Asymmetric
admin
asked
in
Set Theory & Algebra
Mar 30, 2020
by
admin
439
views
nielit2017july-scientistb-it
discrete-mathematics
set-theory&algebra
relations
0
votes
1
answer
99
UGC NET CSE | June 2005 | Part 2 | Question: 3
The transitive closure of a relation $R$ on set $A$ whose relation matrix $\begin{bmatrix} 0 & 1 & 0\\ 0 & 0 & 1 \\ 1 & 0 & 0 \end{bmatrix}$ ... $\begin{bmatrix} 0 & 1 & 1\\ 0 & 1 & 1 \\ 0 & 1 & 1 \end{bmatrix}$
go_editor
asked
in
Set Theory & Algebra
Mar 26, 2020
by
go_editor
1.3k
views
ugcnetcse-june2005-paper2
discrete-mathematics
relations
0
votes
1
answer
100
UGC NET CSE | January 2017 | Part 3 | Question: 71
Let $R$ and $S$ be two fuzzy relations defined as: $\begin{matrix} & & & &y_1& &y_2\end{matrix}\\R=\begin{matrix}x_1\\x_2\end{matrix}\begin{bmatrix} 0.6 &0.4 \\ 0.7&0.3 \end{bmatrix} \text{ and}$ ...
go_editor
asked
in
Others
Mar 24, 2020
by
go_editor
721
views
ugcnetcse-jan2017-paper3
engineering-mathematics
relations
15
votes
5
answers
101
GATE CSE 2020 | Question: 17
Let $\mathcal{R}$ be the set of all binary relations on the set $\{1,2,3\}$. Suppose a relation is chosen from $\mathcal{R}$ at random. The probability that the chosen relation is reflexive (round off to $3$ decimal places) is ______.
Arjun
asked
in
Set Theory & Algebra
Feb 12, 2020
by
Arjun
9.1k
views
gatecse-2020
numerical-answers
probability
relations
1-mark
1
vote
2
answers
102
Recurrence Relation Self-Doubt
What will be solution of recurrence relation if roots are like this: r1=-2, r2=2, r3=-2, r4=2 is this the case of repetitive roots?
aditi19
asked
in
Combinatory
May 14, 2019
by
aditi19
847
views
relations
recurrence-relation
discrete-mathematics
combinational-circuit
0
votes
0
answers
103
Rosen 7e Exercise-9.6 Question no-27 page no-631
What is the covering relation of the partial ordering {(A, B) | A ⊆ B} on the power set of S, where S = {a, b, c}? i'm getting R={(Ф, {a}), (Ф, {b}), (Ф, {c}), (Ф, {a, b}), (Ф, {b, c}), (Ф, {a, c}), (Ф, {a, b, c}), ({a}, {a, b}), ({a}, {a, c}), ({b}, ... b, c}), ({c}, {a, c}), ({c}, {b, c}), ({a, b}, {a, b, c}), ({a, c}, {a, b, c})({b, c}, {a, b, c})
aditi19
asked
in
Set Theory & Algebra
May 10, 2019
by
aditi19
648
views
kenneth-rosen
discrete-mathematics
relations
set-theory&algebra
set-theory
1
vote
2
answers
104
Raghuramkrishnan Exercise-4.3 question 11 page no-127 Relational Algebra
Suppliers(sid, sname, address) Parts(pid, pname, color) Catalog(sid, pid, cost) Find the pids of the most expensive parts supplied by suppliers named Yosemite Sham
aditi19
asked
in
Databases
May 8, 2019
by
aditi19
1.2k
views
databases
relations
relational-algebra
relational-calculus
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