Pith Number

pith:PGU4HEYU

pith:2012:PGU4HEYUUUQLIQBM4OOYQV7X4S

not attested not anchored not stored refs pending

An organizing center in a planar model of neuronal excitability

Alessio Franci, Guillaume Drion, Rodolphe Sepulchre

arxiv:1204.5686 v1 · 2012-04-25 · math.DS · q-bio.NC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PGU4HEYUUUQLIQBM4OOYQV7X4S}

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	2026-05-18T03:57:01.617678Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

79a9c39314a520b4402ce39d8857f7e491122448ae9077bbf0581f9705c8093c

Aliases

arxiv: 1204.5686 · arxiv_version: 1204.5686v1 · doi: 10.48550/arxiv.1204.5686 · pith_short_12: PGU4HEYUUUQL · pith_short_16: PGU4HEYUUUQLIQBM · pith_short_8: PGU4HEYU

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/PGU4HEYUUUQLIQBM4OOYQV7X4S \
  | 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: 79a9c39314a520b4402ce39d8857f7e491122448ae9077bbf0581f9705c8093c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a766d507280fe3474105b3f6cd22c3429645139b3db15a4771ac030d946801ef",
    "cross_cats_sorted": [
      "q-bio.NC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2012-04-25T15:44:14Z",
    "title_canon_sha256": "3d946781c8a7d528bb4d562195b3f6ab1ac0dcc0f1a3d51d129399f31b24522a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.5686",
    "kind": "arxiv",
    "version": 1
  }
}