Pith Number

pith:4SDZGER3

pith:2014:4SDZGER3DKXQXY5SRIEOR5EC4Z

not attested not anchored not stored refs pending

Selection Lemmas for various geometric objects

Ninad Rajgopal, Pradeesha Ashok, Sathish Govindarajan

arxiv:1401.0443 v1 · 2014-01-02 · cs.CG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4SDZGER3DKXQXY5SRIEOR5EC4Z}

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	2026-05-18T03:03:23.206042Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e48793123b1aaf0be3b28a08e8f482e6472f832f50a0c152aeccd676b2cfbefb

Aliases

arxiv: 1401.0443 · arxiv_version: 1401.0443v1 · doi: 10.48550/arxiv.1401.0443 · pith_short_12: 4SDZGER3DKXQ · pith_short_16: 4SDZGER3DKXQXY5S · pith_short_8: 4SDZGER3

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/4SDZGER3DKXQXY5SRIEOR5EC4Z \
  | 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: e48793123b1aaf0be3b28a08e8f482e6472f832f50a0c152aeccd676b2cfbefb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bd0cd314709d7cf6d0bd80659b26038fd9d9e279c900fe61b6e1a82247c0811c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2014-01-02T14:06:04Z",
    "title_canon_sha256": "ccb62a5c8aeced7585db6d17e7029950a784bfba6d578db24f9f4672d1116b8c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.0443",
    "kind": "arxiv",
    "version": 1
  }
}