Pith Number

pith:W7QWABZQ

pith:2011:W7QWABZQHSOCYXIZZUGCTT72TU

not attested not anchored not stored refs pending

Irreducibility of the space of dihedral covers of the projective line of a given numerical type

Fabio Perroni, Fabrizio Catanese, Michael L\"onne

arxiv:1102.0490 v1 · 2011-02-02 · math.AG · 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{W7QWABZQHSOCYXIZZUGCTT72TU}

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	2026-05-18T04:30:04.861806Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7e16007303c9c2c5d19cd0c29cffa9d3c977425421f793b7ef3eaefbc51a797

Aliases

arxiv: 1102.0490 · arxiv_version: 1102.0490v1 · doi: 10.48550/arxiv.1102.0490 · pith_short_12: W7QWABZQHSOC · pith_short_16: W7QWABZQHSOCYXIZ · pith_short_8: W7QWABZQ

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/W7QWABZQHSOCYXIZZUGCTT72TU \
  | 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: b7e16007303c9c2c5d19cd0c29cffa9d3c977425421f793b7ef3eaefbc51a797

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "da65687c8e43baeba763d5c0a9fb4aaf5d06d6238055ab28a28f432e4d8ef7fa",
    "cross_cats_sorted": [
      "math.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2011-02-02T16:58:05Z",
    "title_canon_sha256": "9e5cc28a62d39aa8e32e3b05ccf0243077ac5c112f01a7002f0f94392f00746d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.0490",
    "kind": "arxiv",
    "version": 1
  }
}