Pith Number

pith:NM2BTPB3

pith:2002:NM2BTPB3HDSHFY7IRDRIKFESYW

not attested not anchored not stored refs pending

Grope Cobordism and Feynman Diagrams

James Conant, Peter Teichner

arxiv:math/0209075 v1 · 2002-09-06 · math.GT · math.QA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NM2BTPB3HDSHFY7IRDRIKFESYW}

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	2026-05-18T04:41:54.071071Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6b3419bc3b38e472e3e888e2851492c5b870d2360c2ff86dbfc114543cd895a3

Aliases

arxiv: math/0209075 · arxiv_version: math/0209075v1 · doi: 10.48550/arxiv.math/0209075 · pith_short_12: NM2BTPB3HDSH · pith_short_16: NM2BTPB3HDSHFY7I · pith_short_8: NM2BTPB3

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/NM2BTPB3HDSHFY7IRDRIKFESYW \
  | 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: 6b3419bc3b38e472e3e888e2851492c5b870d2360c2ff86dbfc114543cd895a3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f8c931ca88a6e669d92b1cf60cb94252ab220373aae52e2c795e60c90b6806ae",
    "cross_cats_sorted": [
      "math.QA"
    ],
    "license": "",
    "primary_cat": "math.GT",
    "submitted_at": "2002-09-06T22:12:14Z",
    "title_canon_sha256": "a76bb8c29966994aaa1abdf73c57a84a0de75d17e37d4ff05f33f4f262f20710"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0209075",
    "kind": "arxiv",
    "version": 1
  }
}