Pith Number

pith:EPB2KZUV

pith:2013:EPB2KZUVTQBI7SO3VWIMZFVI4Q

not attested not anchored not stored refs pending

Badly approximable points on planar curves and a problem of Davenport

Dzmitry Badziahin, Sanju Velani

arxiv:1301.4243 v1 · 2013-01-17 · math.NT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EPB2KZUVTQBI7SO3VWIMZFVI4Q}

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	2026-05-18T03:36:05.819330Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

23c3a566959c028fc9dbad90cc96a8e40dafd2e83f5f911e8460bb271fa90927

Aliases

arxiv: 1301.4243 · arxiv_version: 1301.4243v1 · doi: 10.48550/arxiv.1301.4243 · pith_short_12: EPB2KZUVTQBI · pith_short_16: EPB2KZUVTQBI7SO3 · pith_short_8: EPB2KZUV

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/EPB2KZUVTQBI7SO3VWIMZFVI4Q \
  | 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: 23c3a566959c028fc9dbad90cc96a8e40dafd2e83f5f911e8460bb271fa90927

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "25342f2108ed8238d7e747533634b5a9d525ed16e785d913ec5873bad677c372",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NT",
    "submitted_at": "2013-01-17T21:25:22Z",
    "title_canon_sha256": "1e636b1b1db3a78f22d7ab3ad1ce57ad03cbbe827d139cd6872dcfdd6aa4149f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.4243",
    "kind": "arxiv",
    "version": 1
  }
}