Pith Number

pith:ED4LKQ77

pith:2014:ED4LKQ77NJNBXSJWLUR2TUGUBQ

not attested not anchored not stored refs pending

Point contacts and boundary triples

Hagen Neidhardt, Igor Yu. Popov, Vladimir Lotoreichik

arxiv:1403.4453 v3 · 2014-03-18 · math-ph · math.MP · math.SP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ED4LKQ77NJNBXSJWLUR2TUGUBQ}

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	2026-05-18T02:49:31.510282Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

20f8b543ff6a5a1bc9365d23a9d0d40c28ddf4a82d946cf5f92afb9f25d31d30

Aliases

arxiv: 1403.4453 · arxiv_version: 1403.4453v3 · doi: 10.48550/arxiv.1403.4453 · pith_short_12: ED4LKQ77NJNB · pith_short_16: ED4LKQ77NJNBXSJW · pith_short_8: ED4LKQ77

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/ED4LKQ77NJNBXSJWLUR2TUGUBQ \
  | 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: 20f8b543ff6a5a1bc9365d23a9d0d40c28ddf4a82d946cf5f92afb9f25d31d30

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "00398f7f1e19ab3d78372b4a416886098835132f084e37c678c46d85136b8865",
    "cross_cats_sorted": [
      "math.MP",
      "math.SP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2014-03-18T13:50:06Z",
    "title_canon_sha256": "bb0687de73e32a864267cb9a3e82363bc622aad1b9d1e799524e7df27445f04d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.4453",
    "kind": "arxiv",
    "version": 3
  }
}