Join experts in discussing linear and abstract algebra topics. This includes vector spaces and linear transformations. Also groups and other algebraic structures along with Number Theory.
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Graduate Genericity of Linear Independence
- jakemf1986
- · Replies 13 ·
Graduate How to state fundamental theorem of arithmetic in a formal way?
- julypraise
- · Replies 4 ·
Undergrad Rotation matrix vs regular matrix
- dmoney123
- · Replies 5 ·
Graduate What is the nullspace of (A-2E)^2?
- Geofleur
- · Replies 4 ·
Graduate Need help explaining what I've done
- ChandlerBaker
- · Replies 1 ·
Graduate Discovering the Prime and Factored Parts of Positive Integers
- lostcauses10x
- · Replies 3 ·
Undergrad Splitting apart bases with a power
- SeventhSigma
- · Replies 1 ·
Undergrad Projection of vector on a plane
- Curl
- · Replies 3 ·
Graduate Is the Gradient Vector Always in the Radial Direction?
- seshikanth
- · Replies 3 ·
Undergrad How Can We Prove Linear Dependence in Vector Spaces?
- autre
- · Replies 10 ·
Undergrad Found Some Pattern in prime numbers
- Genericcoder
- · Replies 21 ·
Graduate Orientation consistency of a group
- SanDiegoMike
- · Replies 3 ·
Graduate How Can You Find Prime Ideals in Products Like Z/3Z x Z/9Z?
- shadowstalker
- · Replies 1 ·
Graduate Finding Primes: A Divisor summatory function
- JeremyEbert
- · Replies 18 ·
Graduate Inherent negativity of seemingly symmetric finite integer sets
- Evic
- · Replies 1 ·
Undergrad Rotation is combination of shearing and scaling
- phiby
- · Replies 3 ·
Undergrad Linear transformation being onto or not (Three problems I understanding)
- sam0617
- · Replies 1 ·
Graduate Problem about Fermat numbers and order of an element
- demonelite123
- · Replies 4 ·
Graduate Does differentiation preserve linear independence?
- AdrianZ
- · Replies 8 ·
Graduate Do tuples exist which aren't elements of a cartesian product of sets?
- bentley4
- · Replies 3 ·
Undergrad I forgot what the formula for this is.
- flyingpig
- · Replies 6 ·
Undergrad Linear Algebra in Analyzing Finance
- Kindayr
- · Replies 1 ·
Undergrad Concepts of Eigenvectors/values
- DrummingAtom
- · Replies 3 ·
Graduate How can I find a solution valid for all cases?
- weetabixharry
- · Replies 5 ·
Undergrad Find Basis for Subspace of R^4 Spanned by Vectors
- sam0617
- · Replies 6 ·
Undergrad Reducing the operation by using the modulo
- paut
- · Replies 15 ·
Graduate Primes as Energy levels (eigenvalues of a certain operator)
- eljose
- · Replies 5 ·
Graduate What is the relationship between rank and submatrices in a nonzero matrix?
- Grothard
- · Replies 2 ·
Undergrad Projections onto a plane and parallel to a vector
- Blacky&Imy
- · Replies 1 ·
Graduate Sum A+cB of invertible matrices noninvertible?
- Grothard
- · Replies 2 ·
Undergrad Inverse matrix with whole numbers
- posuchmex
- · Replies 10 ·
Graduate Writing a Linear program as a semi definite program
- DKOli
- · Replies 6 ·
Undergrad What is the difference between Field and Set ?
- weetabixharry
- · Replies 12 ·
Undergrad Discriminant of a quadratic equation in 2 variables
- Ashu2912
- · Replies 3 ·
Undergrad Question about finding dimensions
- sam0617
- · Replies 4 ·
Undergrad Combine upper, lower, and diagonal matrix?
- sarahfh
- · Replies 1 ·
Graduate Characterizing Affine Independence
- Caramon
- · Replies 2 ·
Graduate Understanding the Relationship Between Exterior and Cross Products
- dimension10
- · Replies 7 ·
Graduate Norms and Units of an Integral Domain
- alexfloo
- · Replies 1 ·
Graduate How to Prove a Matrix is Diagonal?
- weetabixharry
- · Replies 6 ·
Graduate Tensor product and infinite dimensional vector space
- ivl
- · Replies 1 ·
Undergrad What does this statement even mean?
- blastoise
- · Replies 14 ·
Graduate Is the Units Group of Z Modulo 34 Cyclic?
- Bachelier
- · Replies 2 ·
Undergrad Determine whether the function is a linear transformation (Attempt inside)
- sam0617
- · Replies 1 ·
Graduate What Other Iterative Methods Can Be Used If A is Not Positive Definite?
- Milentije
- · Replies 1 ·
Undergrad When to Solve for dimH vs. Column Space or Null Space?
- ElliottG
- · Replies 5 ·
Undergrad How Do You Find Non-Parallel Vectors in a Plane Defined by an Equation?
- Cankur
- · Replies 1 ·
Graduate Are these vector spaces isomorphs?
- gotmejerry
- · Replies 1 ·
Undergrad Variable power as an axis, nonsense? please comment
- elegysix
- · Replies 4 ·
Graduate How to Prove a Group with 2n-1 Subgroups is Trivial or Isomorphic to Z2?
- Bachelier
- · Replies 11 ·
Graduate Is there a formula for calculating partitions with restrictions?
- oleg-mary
- · Replies 5 ·
Graduate (Q,+, .) is a commutative ring : confusion
- bentley4
- · Replies 12 ·
Undergrad Trouble understanding spans of vector spaces
- ElliottG
- · Replies 5 ·
Graduate Why is this always the case A=[itex]\begin{array}{cc}1 & 6
- KingBigness
- · Replies 2 ·
Undergrad What are the prerequisites for learning Linear Algebra?
- AkshayV
- · Replies 6 ·
Graduate Galois Theory questions: Homomorphisms
- wattsup03
- · Replies 1 ·
Undergrad Spanning sets, eigenvalues, eigenvectors etc .
- phy
- · Replies 3 ·
Undergrad Solving Ax=b; when to use LU decomposition?
- hkBattousai
- · Replies 8 ·
Undergrad Inverting a function? f(y) instead of f(x)
- iLIKEstuff
- · Replies 2 ·
Graduate Shrinking down a^b mod m when b is huge and a is irrational?
- SeventhSigma
- · Replies 8 ·
Graduate Are H Union K and Z(g) Subgroups in Group Theory?
- jbarrera
- · Replies 1 ·
Undergrad Creating a system of equations consisting only of integers?
- friedrice821
- · Replies 3 ·
Graduate How Many Homomorphisms Can Be Calculated Between Different Fields?
- wattsup03
- · Replies 2 ·
High School How do I check if a 1x1 matrix is diagonal, lower/upper triangular?
- hkBattousai
- · Replies 2 ·
Graduate Zp[x]/(x^2 + 1) is a field iff p is a prime p ≠ 1 (mod 4)
- Bachelier
- · Replies 12 ·
Undergrad How Are Rational and Irrational Numbers Distributed Along the Real Line?
- Square1
- · Replies 9 ·
Graduate What can commute with a diagonal matrix?
- weetabixharry
- · Replies 5 ·
Graduate Composition of functions and operator algebra.
- tony42
- · Replies 4 ·
Graduate Matrix of a Linear Transformation (Abstract)
- brydustin
- · Replies 1 ·
Graduate Quotient Field of the Positive Rationals
- Kindayr
- · Replies 5 ·
Undergrad Modular arithmetic question about functions
- elegysix
- · Replies 2 ·
High School How can I visualize the plane y=z?
- Cankur
- · Replies 3 ·
High School Understanding Cosets and Subspaces in Linear Algebra
- Anshuman_
- · Replies 3 ·
Undergrad Is S4 a Subset of S5?
- HeronOde
- · Replies 2 ·
Graduate How does the identity Ln(detA)=Tr(lnJ) hold true?
- LAHLH
- · Replies 9 ·
Undergrad Find a prime divisor of 1111 (13 1's)
- mathmadx
- · Replies 2 ·
Undergrad Simple question regarding polynomials
- slevvio
- · Replies 2 ·
Undergrad Collatz Conjecture: Plotting Integer Steps with Joe
- clanijos
- · Replies 9 ·
Graduate Understand Irreducibility in Zp: What is Zp^x? Order of Elements in Zp
- Bachelier
- · Replies 3 ·
Graduate Exponential of jordan form involving distinct eigenvalues
- JamesGoh
- · Replies 4 ·
Undergrad How to Find Convergents of a Continued Fraction?
- shelford
- · Replies 1 ·
Graduate Hello,The pseudoinverse formula for a matrix A is given by:P =
- pamparana
- · Replies 1 ·
Graduate Is the Riemann Hypothesis Equivalent to S=2Z?
- zetafunction
- · Replies 7 ·
Graduate Inner product of vectors and covectors
- Wox
- · Replies 8 ·
Undergrad Vector. Is there an inverse of dot and cross product?
- scoutfai
- · Replies 6 ·
Graduate Constraining the element-wise magnitudes of a matrix
- weetabixharry
- · Replies 2 ·
Graduate Group Action of S3 on a set of ordered pairs
- Math Amateur
- · Replies 4 ·
Undergrad What is the Value of (p+q-2t) and (p^2+q^2-2t^2) in an Equation with Degree 3?
- mahtaban
- · Replies 2 ·
Graduate Tricky complex square matrix problem
- weetabixharry
- · Replies 7 ·
Graduate Does anyone know the name of this type of map
- icantadd
- · Replies 1 ·
Graduate Left group actions involving SO(3) and the 2-sphere
- demonelite123
- · Replies 2 ·
Undergrad Real Numbers vs Extended Real Numbers
- srfriggen
- · Replies 5 ·
Graduate Factor Groups: Conjugation & 2 Conjugates
- Ala'
- · Replies 2 ·
Undergrad Integer values of this expression
- epsi00
- · Replies 4 ·
Graduate Abstract Algebra - Cyclic groups
- basketm19
- · Replies 3 ·
Undergrad What topics from linear algebra do I need to study tensors?
- AdrianZ
- · Replies 19 ·
High School Why is not angle considered as vector?
- s_mr66
- · Replies 10 ·
Undergrad Simple summation, difficult inference. (game theory)
- citrusvanilla
- · Replies 2 ·
Graduate Principal ideals of rings without unity
- Wingeer
- · Replies 5 ·
Graduate Power Series Expansion of Dedekind Eta Function: How to Expand η(τ)/η(3τ)?
- twoforone
- · Replies 2 ·