Pith Number

pith:7ZYHVX6J

pith:2019:7ZYHVX6J43E6AI36WW6FNJ33IJ

not attested not anchored not stored refs pending

Loop Homology of Bi-secondary Structures

Andrei C. Bura, Christian M. Reidys, Qijun He

arxiv:1904.02041 v1 · 2019-04-03 · math.GN

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7ZYHVX6J43E6AI36WW6FNJ33IJ}

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	2026-05-17T23:49:28.913502Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fe707adfc9e6c9e0237eb5bc56a77b42556849c15395e8bb7681955b2b357a6d

Aliases

arxiv: 1904.02041 · arxiv_version: 1904.02041v1 · doi: 10.48550/arxiv.1904.02041 · pith_short_12: 7ZYHVX6J43E6 · pith_short_16: 7ZYHVX6J43E6AI36 · pith_short_8: 7ZYHVX6J

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/7ZYHVX6J43E6AI36WW6FNJ33IJ \
  | 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: fe707adfc9e6c9e0237eb5bc56a77b42556849c15395e8bb7681955b2b357a6d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "511f39ead6f3c669f9693d709a85ed8dfaa2093aa121f753237b6002a018b34a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GN",
    "submitted_at": "2019-04-03T14:58:28Z",
    "title_canon_sha256": "c097508abf3167bea9be004b0caaf6f003c859f954bfe890f4b06782b76a1c2d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.02041",
    "kind": "arxiv",
    "version": 1
  }
}