Pith Number

pith:I3NS5FYR

pith:2012:I3NS5FYR2LAHYP2DJ775UWH472

not attested not anchored not stored refs pending

Hopfological Algebra

You Qi

arxiv:1205.1814 v2 · 2012-05-08 · math.KT · 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{I3NS5FYR2LAHYP2DJ775UWH472}

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	2026-05-17T23:53:18.739581Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

46db2e9711d2c07c3f434fffda58fcfe8f1a31a24f6b164ad80d44da0e827d30

Aliases

arxiv: 1205.1814 · arxiv_version: 1205.1814v2 · doi: 10.48550/arxiv.1205.1814 · pith_short_12: I3NS5FYR2LAH · pith_short_16: I3NS5FYR2LAHYP2D · pith_short_8: I3NS5FYR

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/I3NS5FYR2LAHYP2DJ775UWH472 \
  | 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: 46db2e9711d2c07c3f434fffda58fcfe8f1a31a24f6b164ad80d44da0e827d30

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "efd23365d58c371ec938be9d73416c30aedaff9dd6daaf9763388670e5e246ef",
    "cross_cats_sorted": [
      "math.QA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.KT",
    "submitted_at": "2012-05-08T20:16:17Z",
    "title_canon_sha256": "484317b730ee37485339b7a589e7939997d69ddfe54ddf06c94bec16c18c6018"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.1814",
    "kind": "arxiv",
    "version": 2
  }
}