Mathematics · Linear Algebra

Eigenvalue Geometric Defect Calculator

Calculate defect from algebraic multiplicity and geometric multiplicity.

Runs locally
Your numbers

Inputs and results stay in this browser. Change one value at a time to explore the relationship.

Your inputCalculatedPassed forward in chains
defect2

Calculation steps

  1. Use c=a−b with algebraic multiplicity=4 and geometric multiplicity=2.
  2. defect=2.

Understand Eigenvalue Geometric Defect

One idea, three depths

Choose how deeply to explain Eigenvalue Geometric Defect

Eigenvalue Geometric Defect: Calculate defect from algebraic multiplicity and geometric multiplicity.

Age 5Explain it to a 5-year-oldStart with a picture

Imagine using Eigenvalue Geometric Defect to answer this question: calculate defect from algebraic multiplicity and geometric multiplicity? Enter algebraic multiplicity and geometric multiplicity; the calculator shows defect. For example: algebraic multiplicity=4 and geometric multiplicity=2 produce defect=2. The answer tells you defect.

Age 15Explain it to a 15-year-oldConnect it to the formula

An eigenvalue's defect is algebraic multiplicity minus geometric multiplicity. This page evaluates the relationship directly. The rule is c=a−b. Its input values are algebraic multiplicity, geometric multiplicity, and the main result is defect. For example: algebraic multiplicity=4 and geometric multiplicity=2 produce defect=2.

CollegeExplain it at college levelState the model precisely

This calculator evaluates the stated eigenvalue geometric defect relation over the valid real-number domain stated below. The implemented relation is c=a−b, evaluated from algebraic multiplicity, geometric multiplicity to produce defect. An eigenvalue's defect is algebraic multiplicity minus geometric multiplicity. This page evaluates the relationship directly. A positive defect indicates missing independent eigenvectors for that eigenvalue.

Inputs and valid domain

  • algebraic multiplicity must be a finite real number.
  • geometric multiplicity must be a finite real number.

Important boundary: A positive defect indicates missing independent eigenvectors for that eigenvalue.

The formula

c=a−b

How the calculator works through it

It substitutes algebraic multiplicity, geometric multiplicity into the formula and exposes every numerical step above. The main output is defect.

Read the result correctly

The defect is the direct answer to “calculate defect from algebraic multiplicity and geometric multiplicity.” Read it with the units shown beside the inputs; a sign, angle, percentage or rate changes what the number means.

A worked check

algebraic multiplicity=4 and geometric multiplicity=2 produce defect=2.

Where this model stops being reliable

A positive defect indicates missing independent eigenvectors for that eigenvalue.

Learn it by changing one value

Begin with the worked example, then change one value while keeping the others fixed. Compare the new result and calculation steps to identify which part of the formula changed.

Dictionary terms behind this calculator

Before studying the codeWhat you should know firstUse the calculator immediately, or check the foundations before reading the implementation.

These foundations help you understand why Eigenvalue Geometric Defect works. They never block the calculator, and “optional” means useful context rather than a hidden requirement.

Hard requirements

  • Reading formulas and substituting values

    Eigenvalue Geometric Defect uses c=a−b. You need to recognise what each side represents before substituting the stated inputs or rearranging the relationship.

    Review this foundation about 4 min

Strong support

Optional enrichment

Learn the missing foundationsI already know these — show the code

Mathematics → algorithm → program

Implement this calculation in code

These are direct reference implementations of the calculator's principal relationship and first output. They run locally and include a small known-answer check where the language supports it.

Algorithm

  1. Read algebraic multiplicity, geometric multiplicity.
  2. Evaluate the principal relationship: c=a−b.
  3. Return defect and check the domain conditions described above.
Python
            from math import *

def eigenspace_geometric_defect_calculator(a, b) -> float:
    return (a - b)

assert abs(eigenspace_geometric_defect_calculator(4, 2) - 2) < 1e-6 * max(1.0, abs(2))
          
Current calculator valuesUpdates when you change an input above.
              
            
C
            #include <assert.h>
#include <math.h>

double eigenspace_geometric_defect_calculator(double a, double b) {
    return (a - b);
}

int main(void) {
    const double expected = 2;
    const double actual = eigenspace_geometric_defect_calculator(4, 2);
    assert(fabs(actual - expected) < 1e-6 * fmax(1.0, fabs(expected)));
}
          
Current calculator valuesUpdates when you change an input above.
              
            
C++
            #include <cassert>
#include <cmath>
#include <numbers>

double eigenspace_geometric_defect_calculator(double a, double b) {
    return (a - b);
}

int main() {
    constexpr double expected = 2;
    const double actual = eigenspace_geometric_defect_calculator(4, 2);
    assert(std::fabs(actual - expected) < 1e-6 * std::fmax(1.0, std::fabs(expected)));
}
          
Current calculator valuesUpdates when you change an input above.
              
            
Linux x86-64 assembly

x86-64 NASM · System V ABI · Linux · SSE2 with libm where required

            ; double eigenspace_geometric_defect_calculator(double a, double b)
; Linux x86-64 NASM · System V ABI · first eight doubles in xmm0–xmm7
global eigenspace_geometric_defect_calculator
section .text

eigenspace_geometric_defect_calculator:
    push rbp
    mov rbp, rsp
    sub rsp, 32
    movsd [rbp-8], xmm0
    movsd [rbp-16], xmm1
    movsd xmm0, [rbp-8]
    subsd xmm0, [rbp-16]
    movsd [rbp-24], xmm0
    movsd xmm0, [rbp-24]
    leave
    ret
          
Current calculator valuesUpdates when you change an input above.
              
            
MATLAB
            function result = eigenspace_geometric_defect_calculator(a, b)
    result = (a - b);
end
          
Current calculator valuesUpdates when you change an input above.
              
            
Wolfram Language
            ClearAll[mwCalculate];
mwCalculate[a_, b_] := (a - b);
          
Current calculator valuesUpdates when you change an input above.
              
            

Continue in mathematical software

The downloaded file includes your current inputs and first calculated result. It is created locally.

Floating-point answers can differ slightly by language, compiler and processor. Compare within a suitable tolerance rather than assuming every decimal representation will be identical.

Supporting sourcesAcademic referencesPrimary standards, textbooks and complete citations

Standards, reading and academic references

Use the calculator as the worked interaction, then consult the primary standards and academic textbooks listed below. MW SysArc links to the original sources; the explanation on this page is original and does not reproduce them.

Algebra and Trigonometry 2e

Read the related free OpenStax mathematics chapters
Cite this book
APA 7
Abramson, J. (2021). Algebra and trigonometry 2e. OpenStax. https://openstax.org/books/algebra-and-trigonometry-2e/pages/1-introduction-to-prerequisites
MLA 9
Abramson, Jay. Algebra and Trigonometry 2e. OpenStax, 2021, https://openstax.org/books/algebra-and-trigonometry-2e/pages/1-introduction-to-prerequisites.
Chicago author-date
Abramson, Jay. 2021. Algebra and Trigonometry 2e. Houston, TX: OpenStax. https://openstax.org/books/algebra-and-trigonometry-2e/pages/1-introduction-to-prerequisites.

OpenStax entries are free to read online. Follow the licence shown on each linked source before redistributing or adapting its content.

Reuse the page responsiblyCite this pageAPA, MLA, Chicago, Harvard, BibTeX and RIS

These formats cite this calculator page itself. They are separate from the academic references above, which support the mathematical method and terminology.

APA 7

MW SysArc. (2026, July 21). Eigenvalue Geometric Defect Calculator. MW SysArc Tools. https://math.mwsysarc.com/linear-algebra/eigenspace-geometric-defect-calculator

MLA 9

MW SysArc. “Eigenvalue Geometric Defect Calculator.” MW SysArc Tools, 21 July 2026, https://math.mwsysarc.com/linear-algebra/eigenspace-geometric-defect-calculator. Accessed 31 Aug. 2026.

Chicago 17

MW SysArc. “Eigenvalue Geometric Defect Calculator.” MW SysArc Tools. Published July 21, 2026. Accessed August 31, 2026. https://math.mwsysarc.com/linear-algebra/eigenspace-geometric-defect-calculator.

Harvard

MW SysArc (2026) ‘Eigenvalue Geometric Defect Calculator’, MW SysArc Tools. Published 21 July 2026. Available at: https://math.mwsysarc.com/linear-algebra/eigenspace-geometric-defect-calculator (Accessed: 31 August 2026).

BibTeX and RIS records

BibTeX

@misc{mwsysarc_eigenspace_geometric_defect_calculator_2026,
  author = {{MW SysArc}},
  title = {Eigenvalue Geometric Defect Calculator},
  howpublished = {MW SysArc Tools},
  year = {2026},
  url = {https://math.mwsysarc.com/linear-algebra/eigenspace-geometric-defect-calculator},
  note = {Published July 21, 2026; accessed August 31, 2026}
}

RIS

TY  - ELEC
AU  - MW SysArc
TI  - Eigenvalue Geometric Defect Calculator
T2  - MW SysArc Tools
PY  - 2026
DA  - 2026-07-21
Y2  - 2026-08-31
UR  - https://math.mwsysarc.com/linear-algebra/eigenspace-geometric-defect-calculator
N1  - Published July 21, 2026
ER  -

Clear answers

Frequently asked questions

What does the Eigenvalue Geometric Defect do?

Calculate defect from algebraic multiplicity and geometric multiplicity.

How does the Eigenvalue Geometric Defect work?

The calculator applies c=a−b. An eigenvalue's defect is algebraic multiplicity minus geometric multiplicity. This page evaluates the relationship directly.

What can I learn from the Eigenvalue Geometric Defect?

It connects the mathematical rule to your chosen numbers and shows each calculation step. Change one input at a time to see how the result responds.

Does MW SysArc receive or store what I enter?

No. The calculation runs locally in your browser. MW SysArc does not receive or store your calculation inputs.

How should I use the result?

Use the steps to understand the method, then verify important school or professional work using the notation and rounding rules required in your setting.

Last reviewed . Calculations tested .

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