Pith Number

pith:WTCUMUYZ

pith:2018:WTCUMUYZQ3TMPUTEKYUJ2WTN2F

not attested not anchored not stored refs pending

From Puiseux series to invariant algebraic curves: the FitzHugh-Nagumo model

Maria V. Demina

arxiv:1804.02542 v2 · 2018-04-07 · nlin.SI · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WTCUMUYZQ3TMPUTEKYUJ2WTN2F}

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	2026-05-18T00:05:19.378973Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b4c546531986e6c7d26456289d5a6dd166d81037e5089ec90eb1f86259ecb86a

Aliases

arxiv: 1804.02542 · arxiv_version: 1804.02542v2 · doi: 10.48550/arxiv.1804.02542 · pith_short_12: WTCUMUYZQ3TM · pith_short_16: WTCUMUYZQ3TMPUTE · pith_short_8: WTCUMUYZ

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/WTCUMUYZQ3TMPUTEKYUJ2WTN2F \
  | 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: b4c546531986e6c7d26456289d5a6dd166d81037e5089ec90eb1f86259ecb86a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "85aeccad03eddc1c21446cbdc0d3ff2b7c8eaad85c4e63e6ac008a36476a7f91",
    "cross_cats_sorted": [
      "math.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.SI",
    "submitted_at": "2018-04-07T10:20:31Z",
    "title_canon_sha256": "c73af6518fc1d5f69f38c7dee2a3fc44dd60d0fd143728dfe4969a6bcaae5904"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.02542",
    "kind": "arxiv",
    "version": 2
  }
}