Pith Number

pith:42NBBVS5

pith:2015:42NBBVS5MMI5ODALC6PQ75ILFO

not attested not anchored not stored refs pending

On Hilbert, Riemann, Neumann and Poincare problems for plane quasiregular mappings

Artem Yefimushkin, Vladimir Gutlyanskii, Vladimir Ryazanov

arxiv:1511.02798 v4 · 2015-11-09 · math.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{42NBBVS5MMI5ODALC6PQ75ILFO}

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	2026-05-18T01:25:17.705518Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e69a10d65d6311d70c0b179f0ff50b2b838dcd3d7a79b7dc23ab1a994f618020

Aliases

arxiv: 1511.02798 · arxiv_version: 1511.02798v4 · doi: 10.48550/arxiv.1511.02798 · pith_short_12: 42NBBVS5MMI5 · pith_short_16: 42NBBVS5MMI5ODAL · pith_short_8: 42NBBVS5

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/42NBBVS5MMI5ODALC6PQ75ILFO \
  | 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: e69a10d65d6311d70c0b179f0ff50b2b838dcd3d7a79b7dc23ab1a994f618020

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f83a7a5b1536eab083700e3922a0cdd57f7ed0a0443f1a3218b25ff7283c0f41",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CV",
    "submitted_at": "2015-11-09T18:31:43Z",
    "title_canon_sha256": "68cd372cad972c0f01b0ef31f0ac720c7d149db93bfe9d6eb1050c08011975c5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.02798",
    "kind": "arxiv",
    "version": 4
  }
}