Pith Number

pith:JSUIONLZ

pith:2025:JSUIONLZPN4LKSFWTHRO5XNPNL

not attested not anchored not stored refs pending

On vertices and inflections of singular plane curves

Farid Tari, James William Bruce, Marco Ant\^onio do Couto Fernandes

arxiv:2505.21601 v1 · 2025-05-27 · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JSUIONLZPN4LKSFWTHRO5XNPNL}

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	2026-07-05T11:11:00.854004Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4ca88735797b78b548b699e2eeddaf6ae9c889a32f01523a011a13a54edb220b

Aliases

arxiv: 2505.21601 · arxiv_version: 2505.21601v1 · doi: 10.48550/arxiv.2505.21601 · pith_short_12: JSUIONLZPN4L · pith_short_16: JSUIONLZPN4LKSFW · pith_short_8: JSUIONLZ

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/JSUIONLZPN4LKSFWTHRO5XNPNL \
  | 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: 4ca88735797b78b548b699e2eeddaf6ae9c889a32f01523a011a13a54edb220b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6a26cb367489fc6f56f3da65a8aa339332bd40aabe7978f1a204fb9b8a627a68",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2025-05-27T17:10:57Z",
    "title_canon_sha256": "65fca1824cc56cfa49dffbec4101b529d9a36f12c25ac5375491494b1ebf93bb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.21601",
    "kind": "arxiv",
    "version": 1
  }
}