Pith Number

pith:OUYKA2UW

pith:2013:OUYKA2UW4G3ZJEU4333NB4RYSI

not attested not anchored not stored refs pending

About the homological discrete Conley index of isolated invariant acyclic continua

Francisco R. Ruiz del Portal, Luis Hern\'andez-Corbato, Patrice Le Calvez

arxiv:1302.1137 v1 · 2013-02-05 · math.DS · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OUYKA2UW4G3ZJEU4333NB4RYSI}

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	2026-05-18T02:38:17.351496Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7530a06a96e1b794929cdef6d0f23892377b949af317839cb705a3514819d2e7

Aliases

arxiv: 1302.1137 · arxiv_version: 1302.1137v1 · doi: 10.48550/arxiv.1302.1137 · pith_short_12: OUYKA2UW4G3Z · pith_short_16: OUYKA2UW4G3ZJEU4 · pith_short_8: OUYKA2UW

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/OUYKA2UW4G3ZJEU4333NB4RYSI \
  | 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: 7530a06a96e1b794929cdef6d0f23892377b949af317839cb705a3514819d2e7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4480b140a07267d1e91680df72c26afd3f56ce779649dcc0699f4ed3e1dd4134",
    "cross_cats_sorted": [
      "math.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2013-02-05T18:02:54Z",
    "title_canon_sha256": "9e15aa8bb5c9c5850eafe8d8777dc7d3905525475042a1577ae8350db363ff4e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.1137",
    "kind": "arxiv",
    "version": 1
  }
}