User Sry

5

10

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1

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590

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linear-algebra matrices

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2

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$\binom{n}{r} = 8$ Is there any way to find such $n$ and $r$?

combinatorics elementary-number-theory discrete-mathematics binomial-coefficients

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1

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808

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Complement of a connected graph

graph-theory algebraic-graph-theory

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3

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smallest root of $f$ is strictly less than smallest root of $g$.

real-analysis systems-of-equations roots

Oct 30 '16 at 20:08 WimC 27.9k

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Two rows corresponding to adjacent vertices of a tree cannot both be linear combinations of the other rows

linear-algebra matrices graph-theory

Jul 17 '16 at 13:13 Will Orrick 17.7k

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When do a Regular graph has an odd eigenvalue?

matrices graph-theory eigenvalues-eigenvectors algebraic-graph-theory spectral-graph-theory

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2

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Last entry of any eigenvector of $A$ can not be zero

matrices graph-theory eigenvalues-eigenvectors

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1

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0

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95

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Maximal determinant of a $\{1,−1\}$ matrix of size $n$ is $2^{n−1}$ times the maximal determinant of a $ \{0,1\}$ matrix of size $n−1$.

linear-algebra combinatorics matrices determinant

Jul 13 '15 at 19:31 Will Orrick 17.7k

2

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206

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Do $J$, the all-ones matrix of even order, always have eigenvectors consisting of entries $-1, 1$ only?

linear-algebra matrices eigenvalues-eigenvectors

May 30 '15 at 11:23 Holonomia 2,357

2

votes

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68

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Is there any condition while applying law of exponents?

complex-analysis exponentiation real-numbers

Apr 20 '15 at 12:23 Muschkopp 366

1

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Comparison of the largest eigenvalues of two symmetric matrices

matrices spectral-radius

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Is the largest eigenvalue of $A$ is greater than that of $B$?

matrices graph-theory

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1

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answers

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how to maximize $f(x,y)=\frac{x+y-2}{xy}$?

real-analysis optimization fractions maxima-minima convexity-inequality

Feb 1 '18 at 16:46 Michael Rozenberg 177k

1

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1

answer

101

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Comparison of largest eigenvalue

linear-algebra matrices symmetric-matrices

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1

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1

answer

55

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A bijective map from $\mathbb R\setminus \{1\}$ to $\mathbb R\setminus \{1,2,3\}$ [closed]

real-analysis

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1

vote

1

answer

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what will be eigenvalues of this block matrix

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Jan 22 '16 at 9:50 Urgje 1,869

1

vote

1

answer

102

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Are $G_1$ and $G_2$ isomorphic?

matrices discrete-mathematics graph-theory graph-laplacian

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1

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1

answer

599

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Equivalent definition of cograph

graph-theory algebraic-graph-theory

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1

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1

answer

409

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Is there any relation between these matrices?

matrices graph-theory graph-laplacian

Apr 13 '15 at 12:40 Chris Godsil 12.7k

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18

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Minimizing the largest eigenvalue in a family of nonnegative matrices.

symmetric-matrices

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What will be the final polynomial for this recurrence relation?

real-analysis recurrence-relations

Jan 24 '17 at 2:12 dxiv 59.9k

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Standard terminology for a particular vertex

graph-theory algorithms terminology

Sep 14 '16 at 11:45 Sry 682

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root of $g$ is smaller than that of $f$.

polynomials roots cubic-equations

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How to solve this recurrence relation for a general $n$

discrete-mathematics recurrence-relations

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Combinatorics involved in Steiner triple systems

combinatorics

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answers

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Graph Combinatorics: How many such Graphs are there?

combinatorics graph-theory spectral-graph-theory graph-laplacian

Apr 22 '15 at 9:39 Sry 682

0

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1

answer

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What will be the eigen values of new matrix?

linear-algebra matrices eigenvalues-eigenvectors

Apr 9 '15 at 12:57 Marc van Leeuwen 102k

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1

answer

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To prove an inequality of degree 3 polynomilals [closed]

real-analysis inequality polynomials radicals

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28 Questions

On an operator norm inequality for two triangular matrices

$\binom{n}{r} = 8$ Is there any way to find such $n$ and $r$?

Complement of a connected graph

smallest root of $f$ is strictly less than smallest root of $g$.

Two rows corresponding to adjacent vertices of a tree cannot both be linear combinations of the other rows

When do a Regular graph has an odd eigenvalue?

Last entry of any eigenvector of $A$ can not be zero

Maximal determinant of a $\{1,−1\}$ matrix of size $n$ is $2^{n−1}$ times the maximal determinant of a $ \{0,1\}$ matrix of size $n−1$.

Do $J$, the all-ones matrix of even order, always have eigenvectors consisting of entries $-1, 1$ only?

Is there any condition while applying law of exponents?

Comparison of the largest eigenvalues of two symmetric matrices

Is the largest eigenvalue of $A$ is greater than that of $B$?

how to maximize $f(x,y)=\frac{x+y-2}{xy}$?

Comparison of largest eigenvalue

A bijective map from $\mathbb R\setminus \{1\}$ to $\mathbb R\setminus \{1,2,3\}$ [closed]

what will be eigenvalues of this block matrix

Are $G_1$ and $G_2$ isomorphic?

Equivalent definition of cograph

Is there any relation between these matrices?

Minimizing the largest eigenvalue in a family of nonnegative matrices.

What will be the final polynomial for this recurrence relation?

Standard terminology for a particular vertex

root of $g$ is smaller than that of $f$.

How to solve this recurrence relation for a general $n$

Combinatorics involved in Steiner triple systems

Graph Combinatorics: How many such Graphs are there?

What will be the eigen values of new matrix?

To prove an inequality of degree 3 polynomilals [closed]