Login
Register
Dark Mode
Brightness
Profile
Edit Profile
Messages
My favorites
My Updates
Logout
Filter
Recent
Hot!
Most votes
Most answers
Most views
Previous GATE
Featured
Recent questions in Discrete Mathematics
0
votes
0
answers
2821
Eigen vector
Shivangi Parashar 2
138
views
Shivangi Parashar 2
asked
Aug 18, 2018
0
votes
0
answers
2822
Eigen vector
Shivangi Parashar 2
208
views
Shivangi Parashar 2
asked
Aug 17, 2018
0
votes
1
answer
2823
Graph theory
In tree for every pair of vertices u!=v in G their is exactly 1 path from u to v .Please help me to prove this
In tree for every pair of vertices u!=v in G their is exactly 1 path from u to v .Please help me to prove this
Shivangi Parashar 2
350
views
Shivangi Parashar 2
asked
Aug 17, 2018
0
votes
1
answer
2824
State True/False
1. If f is bijective function then f-1 is also bijective function. 2. If f is surjective function then f-1 is a function but not surjective. 3. Inverse of a function 'f' is a function only when it is bijective. 4. If a relation R: X->Y is left total, then it must be a function.
1. If f is bijective function then f-1 is also bijective function.2. If f is surjective function then f-1 is a function but not surjective.3. Inverse of a function 'f' is...
Naveen Kumar 3
1.3k
views
Naveen Kumar 3
asked
Aug 17, 2018
Set Theory & Algebra
relations
functions
discrete-mathematics
+
–
1
votes
1
answer
2825
Combinations and Permutations
In how many ways can 12 different books be parceled into 4 packets so that 3 of the packets contain 3 books each and one of them two books atleast, if all the packets have the same destination?
In how many ways can 12 different books be parceled into 4 packets so that 3 of the packets contain 3 books each and one of them two books atleast, if all the packets hav...
Devshree Dubey
1.4k
views
Devshree Dubey
asked
Aug 17, 2018
Combinatory
discrete-mathematics
combinatory
+
–
1
votes
0
answers
2826
Kenneth Rosen: Algeraic structure
https://gateoverflow.in/?qa=blob&qa_blobid=8621402344393100507 I am not able to understand How both structure have same signature? Two algebras are of same signature if they have same number of operations and same number of constants and also corresponding operations are of same arity.
https://gateoverflow.in/?qa=blob&qa_blobid=8621402344393100507 I am not able to understand How both structure have same signature? Two algebras are of same signature if ...
Sandy Sharma
230
views
Sandy Sharma
asked
Aug 17, 2018
Mathematical Logic
kenneth-rosen
discrete-mathematics
set-theory&algebra
+
–
0
votes
0
answers
2827
Combinatorics
There are 100 students. 85 choose Math, 80 choose Physics, 75 choose Chemistry, 70 choose Biology. What is the minimum number of students choosing all 4 subjects? Assume each student chosen at least one subject?
There are 100 students. 85 choose Math, 80 choose Physics, 75 choose Chemistry, 70 choose Biology. What is the minimum number of students choosing all 4 subjects? Assume ...
aditi19
1.5k
views
aditi19
asked
Aug 16, 2018
Combinatory
combinatory
+
–
0
votes
1
answer
2828
Relations and lattice
1. Every complemented lattice is distributed 2. Every Distributed lattice is complemented 3.Every Distributive lattice is bounded 4 .Every complemented lattice is bounded True or false
1. Every complemented lattice is distributed 2. Every Distributed lattice is complemented3.Every Distributive lattice is bounded4 .Every complemented lattice is boundedTr...
jatin khachane 1
322
views
jatin khachane 1
asked
Aug 16, 2018
1
votes
1
answer
2829
Kenneth Rosen Edition 6th Exercise 6.4 Example 15 (Page No. 435 )
How to find the coefficient ( for eg $x^7$ ) in the generating function$(1+x+x^2+x^3+..)(1+x^2+x^4+x^6+..)(1+x^5+x^{10}+x^{15}+..)$ ?
How to find the coefficient ( for eg $x^7$ ) in the generating function$(1+x+x^2+x^3+..)(1+x^2+x^4+x^6+..)(1+x^5+x^{10}+x^{15}+..)$ ?
anip
555
views
anip
asked
Aug 15, 2018
Combinatory
kenneth-rosen
generating-functions
discrete-mathematics
counting
+
–
1
votes
1
answer
2830
GATE-2018-ECE
Let M be a real 4 × 4 matrix. Consider the following statements : S1 : M has 4 linearly independent eigenvectors. S2 : M has 4 distinct eigenvalues. S3 : M is non-singular (invertible). Whict one among the following is TRUE? (a) S1 implies S2 (b) S2 implies S1 (c) S1 implies S3 (d) S3 implies S2 Note: Plz explain in detail why other options are incorrect.
Let M be a real 4 × 4 matrix. Consider the following statements :S1 : M has 4 linearly independent eigenvectors.S2 : M has 4 distinct eigenvalues.S3 : M is non-singular ...
Manish11102
1.3k
views
Manish11102
asked
Aug 15, 2018
1
votes
0
answers
2831
Descrete math
Which of the following is true ?
Which of the following is true ?
Prince Sindhiya
559
views
Prince Sindhiya
asked
Aug 15, 2018
Mathematical Logic
discrete-mathematics
+
–
0
votes
0
answers
2832
Kenneth Rosen Edition 6th Exercise 7.6 Question 54 (Page No. 525)
Determine whether each of these posets is well-ordered. (Q ∩[0, 1], ≤) (the set of rational numbers between 0 and 1 inclusive) The answer is not well ordered because as it doesn't have any unique least element as 0 ... 23,0/234). All are representing zero but there is no unique among them. Is this the reason here? Please confirm
Determine whether each of these posets is well-ordered.(Q ∩[0, 1], ≤) (the set of rational numbers between0 and 1 inclusive) The answer is not well ordered because as...
Abhijit Sen 4
524
views
Abhijit Sen 4
asked
Aug 14, 2018
Set Theory & Algebra
kenneth-rosen
discrete-mathematics
lattice
relations
+
–
2
votes
1
answer
2833
Sets ,DM
Let P ( S ) denotes the power set of the set S, the dual of the lattice ( P(S), ⊆ ) is a) Doesn't’t exist b) ( P(S), ⊆ ) c) ( P(S), ⊇ ) d) ( S,⊇)
Let P ( S ) denotes the power set of the set S, the dual of the lattice ( P(S), ⊆ ) is a) Doesn't’t exist b) ( P(S), ⊆ ) c) ( P(S), ⊇ ) d) ( S,⊇)
manisha11
972
views
manisha11
asked
Aug 14, 2018
Mathematical Logic
discrete-mathematics
set-theory&algebra
+
–
1
votes
2
answers
2834
Graph theory Modified
What is the maximum integer value m such that every simple connected graph with r vertices and r+2 edges contains at least m different spanning trees ? 1)1 2)4 3)8 4)m
What is the maximum integer value m such that every simple connected graph with r vertices and r+2 edges contains at least m different spanning trees ?1)12)43)84)m
srestha
2.0k
views
srestha
asked
Aug 13, 2018
Graph Theory
graph-theory
discrete-mathematics
+
–
0
votes
1
answer
2835
made easy test series
1) Every group of prime order is Abelien group. 2) If (G,*) be a cyclic group of even order ,then there exist atleast one elements other than identity element such that a=a^(-1)
1) Every group of prime order is Abelien group.2) If (G,*) be a cyclic group of even order ,then there exist atleast one elements other than identity element such that a=...
talha hashim
293
views
talha hashim
asked
Aug 13, 2018
0
votes
1
answer
2836
made easy test series
Every graph with fewer edge than vertices has component of tree(explain)
Every graph with fewer edge than vertices has component of tree(explain)
talha hashim
270
views
talha hashim
asked
Aug 13, 2018
0
votes
1
answer
2837
made easy test series
Consider F be a family of all subsets of set {1,2,3,.....100} that contain atleast 50 numbers,partially ordered with respect to containment.Then maximum size of chains in the poset (F,⊆) that cover F is
Consider F be a family of all subsets of set {1,2,3,.....100} that contain atleast 50 numbers,partially ordered with respect to containment.Then maximum size of chains in...
talha hashim
682
views
talha hashim
asked
Aug 13, 2018
1
votes
3
answers
2838
made easy test series
What is the number of partition of X={a,b,c,d,e,f}.where 'a' and 'c' are always in same block?
What is the number of partition of X={a,b,c,d,e,f}.where 'a' and 'c' are always in same block?
talha hashim
6.5k
views
talha hashim
asked
Aug 13, 2018
13
votes
4
answers
2839
GATE CSE 1998 | Question: 10b
Let $R$ be a binary relation on $A = \{a, b, c, d, e, f, g, h\}$ represented by the following two component digraph. Find the smallest integers $m$ and $n$ such that $m < n$ and $R^m = R^n$.
Let $R$ be a binary relation on $A = \{a, b, c, d, e, f, g, h\}$ represented by the following two component digraph. Find the smallest integers $m$ and $n$ such that $m <...
Arjun
4.3k
views
Arjun
asked
Aug 12, 2018
Set Theory & Algebra
gate1998
descriptive
set-theory&algebra
relations
+
–
0
votes
0
answers
2840
Set Theory Doubt
What is meant by s* or any other symbol which has an asterisk in Set Theory?
What is meant by s* or any other symbol which has an asterisk in Set Theory?
Devshree Dubey
629
views
Devshree Dubey
asked
Aug 11, 2018
Set Theory & Algebra
discrete-mathematics
set-theory
+
–
Page:
« prev
1
...
137
138
139
140
141
142
143
144
145
146
147
...
357
next »
Email or Username
Show
Hide
Password
I forgot my password
Remember
Log in
Register