Pith Number

pith:SO7FU7HO

pith:2017:SO7FU7HOO2I2CUM2UAIQKGI3DL

not attested not anchored not stored refs pending

Spectral radius of a star with one long arm

Hyunshik Shin

arxiv:1709.08871 v1 · 2017-09-26 · 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{SO7FU7HOO2I2CUM2UAIQKGI3DL}

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	2026-05-18T00:34:21.679479Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

93be5a7cee7691a1519aa01105191b1ac5bcf86ca145aeea75c125b76a72f994

Aliases

arxiv: 1709.08871 · arxiv_version: 1709.08871v1 · doi: 10.48550/arxiv.1709.08871 · pith_short_12: SO7FU7HOO2I2 · pith_short_16: SO7FU7HOO2I2CUM2 · pith_short_8: SO7FU7HO

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/SO7FU7HOO2I2CUM2UAIQKGI3DL \
  | 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: 93be5a7cee7691a1519aa01105191b1ac5bcf86ca145aeea75c125b76a72f994

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4fb69afa0bea87c4c980d677b975149b445d435d5b14e966740ca622975c2feb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2017-09-26T07:56:04Z",
    "title_canon_sha256": "fe5ed77426b4a9a315b04c2ca61921d957fc438091127e9247892577fc3ec9bb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.08871",
    "kind": "arxiv",
    "version": 1
  }
}