About 400 results
  1. Null space 2: Calculating the null space of a matrix

    The orthogonal complement of the row space is the null space. Linear independence comes in when we start thinking about dimension. The dimension of a subspace generated by the row space will be …

  2. Introduction to the null space of a matrix - Khan Academy

    In mathematics, particularly in linear algebra and topology, a subspace can also be referred to as a linear subspace or a subspace topology, depending on the context.

  3. Null space and column space basis (video) | Khan Academy

    Figuring out the null space and a basis of a column space for a matrix. Created by Sal Khan.

  4. Null space 3: Relation to linear independence - Khan Academy

    The null space of a matrix represents all vectors that, when multiplied by the matrix, result in the zero vector. In essence, it signifies the set of input vectors that get "squashed" or mapped to the origin …

  5. Dimension of the null space or nullity (video) | Khan Academy

    No, the dimension of the null space (also known as the nullity) is not simply the number of columns minus the number of rows. The dimension of the null space is equal to the number of columns minus …

  6. Vectors and spaces | Linear algebra | Math | Khan Academy

    Unit 1: Vectors and spaces About this unit Vectors are used to represent many things around us: from forces like gravity, acceleration, friction, stress and strain on structures, to computer graphics used in …

  7. Visualizing a column space as a plane in R3 - Khan Academy

    We find out that the null space of A contains more than just the zero vector. It's just the span of these two vectors here, which means that these columns are not linearly independent.

  8. Column space of a matrix (video) | Khan Academy

    In the next couple of videos I'm going to try to bring everything together of what we know about column spaces, and null spaces, and whatever else to kind of understand a matrix and a matrix vector …

  9. Rowspace and left nullspace (video) | Khan Academy

    So our nullspace is essentially all of the linear combinations of this guy and that guy. Or another way to write it, the nullspace of A is equal to the span, which is the same thing as all the linear combinations …

  10. Projections onto subspaces (video) | Khan Academy

    The null space of matrix 𝐀 is defined as all vectors x⃗ that satisfy 𝐀x⃗ = 0, while the Orthogonal Complement of matrix 𝐀 can be calculated as all vectors y⃗ that satisfy 𝐀ᵀy⃗ = 0.