Pith Number

pith:QVQUTV4A

pith:2011:QVQUTV4AGFP5UUAU5HGEXWUSXN

not attested not anchored not stored refs pending

An explicit computation of a family of trivialising \'etale covers

Axel St\"abler

arxiv:1111.2131 v1 · 2011-11-09 · 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{QVQUTV4AGFP5UUAU5HGEXWUSXN}

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	2026-05-18T04:08:44.055258Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

856149d780315fda5014e9cc4bda92bb410a8782bb3dbba973ba566bae7c0060

Aliases

arxiv: 1111.2131 · arxiv_version: 1111.2131v1 · doi: 10.48550/arxiv.1111.2131 · pith_short_12: QVQUTV4AGFP5 · pith_short_16: QVQUTV4AGFP5UUAU · pith_short_8: QVQUTV4A

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/QVQUTV4AGFP5UUAU5HGEXWUSXN \
  | 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: 856149d780315fda5014e9cc4bda92bb410a8782bb3dbba973ba566bae7c0060

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6e5df2953cf0e1e8cef89876e5d385c9156f6889758a24fbb30a934733ef8bd7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2011-11-09T08:38:02Z",
    "title_canon_sha256": "e7e53df5ca42352380ff8c843d417a35d95905eedf335e5e40f2496b1a4e8d15"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.2131",
    "kind": "arxiv",
    "version": 1
  }
}