Pith Number

pith:5K4SUDPT

pith:2009:5K4SUDPTY7SXLEQIIDNXI2FTQP

not attested not anchored not stored refs pending

Feynman motives and deletion-contraction relations

Matilde Marcolli (Caltech), Paolo Aluffi (FSU)

arxiv:0907.3225 v1 · 2009-07-18 · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5K4SUDPTY7SXLEQIIDNXI2FTQP}

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.

Receipt and verification

First computed	2026-05-18T03:58:14.324351Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eab92a0df3c7e575920840db7468b383d4b3a6a8bb6c94f4292c8e7745d46e4a

Aliases

arxiv: 0907.3225 · arxiv_version: 0907.3225v1 · doi: 10.48550/arxiv.0907.3225 · pith_short_12: 5K4SUDPTY7SX · pith_short_16: 5K4SUDPTY7SXLEQI · pith_short_8: 5K4SUDPT

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/5K4SUDPTY7SXLEQIIDNXI2FTQP \
  | 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: eab92a0df3c7e575920840db7468b383d4b3a6a8bb6c94f4292c8e7745d46e4a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "519aace9df46e83020a80ffc397c04b1fb25894895c9176e27c4921d5988bfc5",
    "cross_cats_sorted": [
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2009-07-18T15:20:35Z",
    "title_canon_sha256": "73cb8d981a4f581ba935010fc7bd45b0ecf5edaf4fa7463ab6b4d6ad0d56d95b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.3225",
    "kind": "arxiv",
    "version": 1
  }
}