Pith Number

pith:EGO6IMGF

pith:2018:EGO6IMGF6TOH5KF6VPAHUAV5BU

not attested not anchored not stored refs pending

Ancient Solutions to Curve Shortening with Finite Total Curvature

Qian You, Sigurd Angenent

arxiv:1803.01399 v1 · 2018-03-04 · 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{EGO6IMGF6TOH5KF6VPAHUAV5BU}

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	2026-05-18T00:22:00.743481Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

219de430c5f4dc7ea8beabc07a02bd0d34569e86e3742a39f9caef02ac3fe489

Aliases

arxiv: 1803.01399 · arxiv_version: 1803.01399v1 · doi: 10.48550/arxiv.1803.01399 · pith_short_12: EGO6IMGF6TOH · pith_short_16: EGO6IMGF6TOH5KF6 · pith_short_8: EGO6IMGF

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/EGO6IMGF6TOH5KF6VPAHUAV5BU \
  | 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: 219de430c5f4dc7ea8beabc07a02bd0d34569e86e3742a39f9caef02ac3fe489

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dfbccec712dfc5ec2446535190aec62d285f7f96e7687cc4be4be6d3fb23c649",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2018-03-04T18:37:40Z",
    "title_canon_sha256": "8dd9796507ac5965b25dee332e89ad897af4a362eaae4fb30886f2e1ceecb9e6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.01399",
    "kind": "arxiv",
    "version": 1
  }
}