Pith Number

pith:7BX4PD77

pith:2025:7BX4PD77C6YBSPC63BHYYO5MIR

not attested not anchored not stored refs pending

Vanishing arcs for isolated plane curve singularities

Cheol-Hyun Cho, Dongwook Choa, Hanwool Bae, Pablo Portilla Cuadrado, Wonbo Jeong

arxiv:2506.04917 v1 · 2025-06-05 · 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{7BX4PD77C6YBSPC63BHYYO5MIR}

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	2026-07-05T11:16:39.066173Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f86fc78fff17b0193c5ed84f8c3bac444d5fb79a3dde2a0e9ada3d2d78fae433

Aliases

arxiv: 2506.04917 · arxiv_version: 2506.04917v1 · doi: 10.48550/arxiv.2506.04917 · pith_short_12: 7BX4PD77C6YB · pith_short_16: 7BX4PD77C6YBSPC6 · pith_short_8: 7BX4PD77

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/7BX4PD77C6YBSPC63BHYYO5MIR \
  | 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: f86fc78fff17b0193c5ed84f8c3bac444d5fb79a3dde2a0e9ada3d2d78fae433

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7fbe1fcffc0c3c0c58f2f037cc15d96ef9c69ddf40d3885e2d014e4b17ab25aa",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2025-06-05T11:52:38Z",
    "title_canon_sha256": "2336dbbe0f77c899af0fe6efd027715d3245a3b8a155e5a967cc21f84f48701d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2506.04917",
    "kind": "arxiv",
    "version": 1
  }
}