Pith Number

pith:SC64JUVU

pith:2008:SC64JUVU4K722KW74E5QA5WYSM

not attested not anchored not stored refs pending

Geometric torsions and an Atiyah-style topological field theory

Igor Korepanov

arxiv:0806.2514 v2 · 2008-06-16 · math.GT · math.AT · 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{SC64JUVU4K722KW74E5QA5WYSM}

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	2026-05-18T04:20:59.559031Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

90bdc4d2b4e2bfad2adfe13b0076d89337a34251fee3ce955a4f8a8405ee7f9e

Aliases

arxiv: 0806.2514 · arxiv_version: 0806.2514v2 · doi: 10.48550/arxiv.0806.2514 · pith_short_12: SC64JUVU4K72 · pith_short_16: SC64JUVU4K722KW7 · pith_short_8: SC64JUVU

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/SC64JUVU4K722KW74E5QA5WYSM \
  | 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: 90bdc4d2b4e2bfad2adfe13b0076d89337a34251fee3ce955a4f8a8405ee7f9e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8a96e49cd7323b3ff1b7277530c8a459c8dd197974cc27538eb9569a20498dce",
    "cross_cats_sorted": [
      "math.AT",
      "math.QA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2008-06-16T07:55:52Z",
    "title_canon_sha256": "6bc096c752d54293f77219aa838aca56621fbbdb8bc580a0b9f9608200e4d850"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0806.2514",
    "kind": "arxiv",
    "version": 2
  }
}