Pith Number

pith:G63MT5O2

pith:2019:G63MT5O2C5JREUAMFM55L2FFBP

not attested not anchored not stored refs pending

Behavior of convex surfaces near ridge points

Alexander Plakhov

arxiv:1906.02320 v2 · 2019-06-05 · math.MG · math.CA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{G63MT5O2C5JREUAMFM55L2FFBP}

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	2026-05-17T23:42:53.055486Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

37b6c9f5da175312500c2b3bd5e8a50bd152936df74de262272cb98fa29e32c8

Aliases

arxiv: 1906.02320 · arxiv_version: 1906.02320v2 · doi: 10.48550/arxiv.1906.02320 · pith_short_12: G63MT5O2C5JR · pith_short_16: G63MT5O2C5JREUAM · pith_short_8: G63MT5O2

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/G63MT5O2C5JREUAMFM55L2FFBP \
  | 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: 37b6c9f5da175312500c2b3bd5e8a50bd152936df74de262272cb98fa29e32c8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "76d4914b8061dd767f2e50da2d67fd0605fdcdf97fccb420d86b3ff69e10f9be",
    "cross_cats_sorted": [
      "math.CA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.MG",
    "submitted_at": "2019-06-05T21:40:03Z",
    "title_canon_sha256": "d7db86ac65ce74db4e262a223655adcece67fd633359682f74f2838d5ef8ceec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.02320",
    "kind": "arxiv",
    "version": 2
  }
}