Pith Number

pith:DDA4A662

pith:2006:DDA4A662ICHMUJSLLPYF5DQRYO

not attested not anchored not stored refs pending

Unoriented geometric functors

Laurence R. Taylor

arxiv:math/0606651 v1 · 2006-06-26 · math.GT · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DDA4A662ICHMUJSLLPYF5DQRYO}

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	2026-05-18T03:39:03.909009Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18c1c07bda408eca264b5bf05e8e11c3b6dcd0c5efa1efc86637aee25b0923a6

Aliases

arxiv: math/0606651 · arxiv_version: math/0606651v1 · doi: 10.48550/arxiv.math/0606651 · pith_short_12: DDA4A662ICHM · pith_short_16: DDA4A662ICHMUJSL · pith_short_8: DDA4A662

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/DDA4A662ICHMUJSLLPYF5DQRYO \
  | 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: 18c1c07bda408eca264b5bf05e8e11c3b6dcd0c5efa1efc86637aee25b0923a6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3984e82eeee26b8905bcdc8f649161ae6d030956829cb13ab280c4c769adab9b",
    "cross_cats_sorted": [
      "math.AT"
    ],
    "license": "",
    "primary_cat": "math.GT",
    "submitted_at": "2006-06-26T16:26:23Z",
    "title_canon_sha256": "3692a0787018a8b309b170252bb72bc72ebf65db3daeea2b4eb6b90a10bc04e4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0606651",
    "kind": "arxiv",
    "version": 1
  }
}