Pith Number

pith:KDRNWDHY

pith:2017:KDRNWDHYJH6E2Z6KV52R65AUG7

not attested not anchored not stored refs pending

Eccentricities in the flip-graphs of convex polygons

Lionel Pournin

arxiv:1706.06456 v2 · 2017-06-20 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KDRNWDHYJH6E2Z6KV52R65AUG7}

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	2026-07-04T23:52:31.564274Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

50e2db0cf849fc4d67caaf751f741437ed09723e547faf4849ac404aefb3cbb7

Aliases

arxiv: 1706.06456 · arxiv_version: 1706.06456v2 · doi: 10.48550/arxiv.1706.06456 · pith_short_12: KDRNWDHYJH6E · pith_short_16: KDRNWDHYJH6E2Z6K · pith_short_8: KDRNWDHY

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/KDRNWDHYJH6E2Z6KV52R65AUG7 \
  | 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: 50e2db0cf849fc4d67caaf751f741437ed09723e547faf4849ac404aefb3cbb7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "68978a6b0abd8b632c15cdf9e9558a895e75229eddff8da602f6c17ea89415de",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2017-06-20T14:15:48Z",
    "title_canon_sha256": "865d4b667a4d2ee7b64774ed4de0c62a3193b30530322bc0ab0348f4015442dd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.06456",
    "kind": "arxiv",
    "version": 2
  }
}