Pith Number

pith:32WUKFR7

pith:2017:32WUKFR7YKADNTPOXFYPKHSO3G

not attested not anchored not stored refs pending

The action of the \'etale fundamental group scheme on the connected component of the essentially finite one

Jo\~ao Pedro P. dos Santos, Ph\`ung H\^o Hai

arxiv:1701.06479 v1 · 2017-01-23 · 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{32WUKFR7YKADNTPOXFYPKHSO3G}

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	2026-05-17T23:45:57.004037Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dead45163fc28036cdeeb970f51e4ed9ae552dcf566ddbe120e56813a78e5753

Aliases

arxiv: 1701.06479 · arxiv_version: 1701.06479v1 · doi: 10.48550/arxiv.1701.06479 · pith_short_12: 32WUKFR7YKAD · pith_short_16: 32WUKFR7YKADNTPO · pith_short_8: 32WUKFR7

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/32WUKFR7YKADNTPOXFYPKHSO3G \
  | 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: dead45163fc28036cdeeb970f51e4ed9ae552dcf566ddbe120e56813a78e5753

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "812b5e64d9143f28ec396a77bf076aae6eccd8e608b0ab4c4bc05f75d6795de2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2017-01-23T16:26:30Z",
    "title_canon_sha256": "d3f98a6817a12c7a6bc8eced2246bb418db69735166dfac9e630b048eaa5e1e9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.06479",
    "kind": "arxiv",
    "version": 1
  }
}