Pith Number

pith:XCXPWFKJ

pith:2018:XCXPWFKJ34BUZJWEA2SQDFDHZA

not attested not anchored not stored refs pending

Non-Commutative Integrability of the Grassmann Pentagram Map

Nicholas Ovenhouse

arxiv:1810.11742 v2 · 2018-10-28 · math.QA · math.CO · math.SG

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XCXPWFKJ34BUZJWEA2SQDFDHZA}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Cited by

1 paper in Pith

Coupled double Poisson brackets

Receipt and verification

First computed	2026-05-17T23:54:53.542284Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b8aefb1549df034ca6c406a5019467c8356c554fe67cd98876642d17662e1b55

Aliases

arxiv: 1810.11742 · arxiv_version: 1810.11742v2 · doi: 10.48550/arxiv.1810.11742 · pith_short_12: XCXPWFKJ34BU · pith_short_16: XCXPWFKJ34BUZJWE · pith_short_8: XCXPWFKJ

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/XCXPWFKJ34BUZJWEA2SQDFDHZA \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: b8aefb1549df034ca6c406a5019467c8356c554fe67cd98876642d17662e1b55

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "de6f29f84fbcfd0271a47846c1edb20218cd4790fdedea01f910a71b79e0b8bf",
    "cross_cats_sorted": [
      "math.CO",
      "math.SG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.QA",
    "submitted_at": "2018-10-28T01:36:20Z",
    "title_canon_sha256": "9d65268c3b4753b33366def28649438c9d03b4d9b070da18d7fe7c30dd6a0781"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.11742",
    "kind": "arxiv",
    "version": 2
  }
}