Your space to try · No account needed

An idea. A formula. The beginning of something yours.

Explore the editor you will use in your vault. Change the text, compose an equation or try a table. This document stays in this tab’s memory and is lost when you reload it.

Explore the knowledge graph too
Trial document

What would you create with your knowledge?

Create your account and get started
For developers · View document structure
{
  "type": "doc",
  "content": [
    {
      "type": "heading",
      "attrs": {
        "level": 2
      },
      "content": [
        {
          "type": "text",
          "text": "A worked example"
        }
      ]
    },
    {
      "type": "paragraph",
      "content": [
        {
          "type": "text",
          "text": "The Gaussian integral is "
        },
        {
          "type": "mathInline",
          "attrs": {
            "tex": "\\int_{-\\infty}^{\\infty} e^{-x^2}\\,dx = \\sqrt{\\pi}"
          }
        },
        {
          "type": "text",
          "text": ", a staple of probability."
        }
      ]
    },
    {
      "type": "mathBlock",
      "attrs": {
        "tex": "i\\hbar\\frac{\\partial}{\\partial t}\\Psi = \\hat{H}\\Psi"
      }
    },
    {
      "type": "theoremBlock",
      "attrs": {
        "kind": "theorem",
        "title": "Cauchy–Schwarz"
      },
      "content": [
        {
          "type": "paragraph",
          "content": [
            {
              "type": "text",
              "text": "For all vectors "
            },
            {
              "type": "mathInline",
              "attrs": {
                "tex": "\\mathbf{u},\\mathbf{v}"
              }
            },
            {
              "type": "text",
              "text": " in an inner product space:"
            }
          ]
        },
        {
          "type": "mathBlock",
          "attrs": {
            "tex": "|\\langle \\mathbf{u},\\mathbf{v}\\rangle|^2 \\leq \\langle \\mathbf{u},\\mathbf{u}\\rangle\\,\\langle \\mathbf{v},\\mathbf{v}\\rangle"
          }
        }
      ]
    }
  ]
}