Pith Number

pith:IGDA24BA

pith:2015:IGDA24BAXMK4KIY7EYOWDATH6N

not attested not anchored not stored refs pending

Links of rational singularities, L-spaces and LO fundamental groups

Andr\'as N\'emethi

arxiv:1510.07128 v1 · 2015-10-24 · math.GT · 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{IGDA24BAXMK4KIY7EYOWDATH6N}

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	2026-05-18T01:29:19.981626Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

41860d7020bb15c5231f261d618267f35e9be958cc8167c0b80494706aa93df8

Aliases

arxiv: 1510.07128 · arxiv_version: 1510.07128v1 · doi: 10.48550/arxiv.1510.07128 · pith_short_12: IGDA24BAXMK4 · pith_short_16: IGDA24BAXMK4KIY7 · pith_short_8: IGDA24BA

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/IGDA24BAXMK4KIY7EYOWDATH6N \
  | 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: 41860d7020bb15c5231f261d618267f35e9be958cc8167c0b80494706aa93df8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "07ec1db4f1f7f459307fedf14a90d57493d0829dd5048209b3ce35f74c1ed142",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2015-10-24T10:25:58Z",
    "title_canon_sha256": "b8e2636e28a4f0caa218c115aad35909057eb7c11887ffde31354c7b2ec4600f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1510.07128",
    "kind": "arxiv",
    "version": 1
  }
}