Pith Number

pith:UPHKC55C

pith:2020:UPHKC55CDW3YEYXLDKWW33ORIF

not attested not anchored not stored refs pending

Ancient solutions for flow by powers of the curvature in $\mathbb R^2$

Alina Stancu, Guofang Wei, Julie Clutterbuck, Theodora Bourni, Valentina-Mira Wheeler, Xuan Hien Nguyen

arxiv:2005.07642 v2 · 2020-05-15 · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UPHKC55CDW3YEYXLDKWW33ORIF}

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	2026-07-05T01:04:32.446168Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a3cea177a21db78262eb1aad6dedd1414ca9723792c290e59ba8f59f66b6ede8

Aliases

arxiv: 2005.07642 · arxiv_version: 2005.07642v2 · doi: 10.48550/arxiv.2005.07642 · pith_short_12: UPHKC55CDW3Y · pith_short_16: UPHKC55CDW3YEYXL · pith_short_8: UPHKC55C

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/UPHKC55CDW3YEYXLDKWW33ORIF \
  | 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: a3cea177a21db78262eb1aad6dedd1414ca9723792c290e59ba8f59f66b6ede8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ad46bcb1a6a66ac6dc63d1d8da65e36cd860bcca38d42567d85e950c7a7dc70a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2020-05-15T16:55:16Z",
    "title_canon_sha256": "40e0cbf66cb4b4d4082d78b30f319756faf79f86af90113478516d7135ccb258"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2005.07642",
    "kind": "arxiv",
    "version": 2
  }
}