Pith Number

pith:6DKQZDXC

pith:2004:6DKQZDXCJP7J2ZG63DMDNDVGNY

not attested not anchored not stored refs pending

The vanishing neighbourhood of non-isolated singularities

Mihai Tibar

arxiv:math/0411572 v3 · 2004-11-25 · math.CV · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6DKQZDXCJP7J2ZG63DMDNDVGNY}

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	2026-05-18T01:05:25.597644Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f0d50c8ee24bfe9d64ded8d8368ea66e3fbe3cc343c0a6c6e94fe5a7ca4df4d0

Aliases

arxiv: math/0411572 · arxiv_version: math/0411572v3 · doi: 10.48550/arxiv.math/0411572 · pith_short_12: 6DKQZDXCJP7J · pith_short_16: 6DKQZDXCJP7J2ZG6 · pith_short_8: 6DKQZDXC

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/6DKQZDXCJP7J2ZG63DMDNDVGNY \
  | 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: f0d50c8ee24bfe9d64ded8d8368ea66e3fbe3cc343c0a6c6e94fe5a7ca4df4d0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "85a1aa3c028ef04222ae2baefe0aba814d15f156cf59bd022ac2f59158df4879",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "",
    "primary_cat": "math.CV",
    "submitted_at": "2004-11-25T11:45:46Z",
    "title_canon_sha256": "2f91f3879de5463099fab882234c24f52239ac8a5c0211a7715cff3aee292a5e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0411572",
    "kind": "arxiv",
    "version": 3
  }
}