Pith Number

pith:6WWVFWV3

pith:2019:6WWVFWV3WE2ZPBWOJQE3JYRTJU

not attested not anchored not stored refs pending

Singularities and Genus of the k-Ellipse

Weiqiao Han, Yuhan Jiang

arxiv:1908.01414 v2 · 2019-08-04 · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6WWVFWV3WE2ZPBWOJQE3JYRTJU}

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	2026-07-05T01:11:22.769853Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f5ad52dabbb1359786ce4c09b4e2334d3acbd5cff2438b289f14c19cf57566b3

Aliases

arxiv: 1908.01414 · arxiv_version: 1908.01414v2 · doi: 10.48550/arxiv.1908.01414 · pith_short_12: 6WWVFWV3WE2Z · pith_short_16: 6WWVFWV3WE2ZPBWO · pith_short_8: 6WWVFWV3

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/6WWVFWV3WE2ZPBWOJQE3JYRTJU \
  | 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: f5ad52dabbb1359786ce4c09b4e2334d3acbd5cff2438b289f14c19cf57566b3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "82d18e25bd7094f8ea5f4ef8315edeb6dab8df8a3677196f0b9705a70b5e7a00",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2019-08-04T22:25:45Z",
    "title_canon_sha256": "c9ba2dafe459766eb31ab5b5a0a92e9de7786b4e6b12d73af8c8fb3277e188dd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.01414",
    "kind": "arxiv",
    "version": 2
  }
}