Pith Number

pith:NMEA2TYQ

pith:2017:NMEA2TYQY27SNHNOTUEINTPIBG

not attested not anchored not stored refs pending

Computing Kazhdan constants by semidefinite programming

Koji Fujiwara, Yuichi Kabaya

arxiv:1703.04555 v2 · 2017-03-13 · math.GR · math.OA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NMEA2TYQY27SNHNOTUEINTPIBG}

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	2026-05-18T00:48:09.131835Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6b080d4f10c6bf269dae9d0886cde809a8d570fa4f24e144e03613c2b9263a8d

Aliases

arxiv: 1703.04555 · arxiv_version: 1703.04555v2 · doi: 10.48550/arxiv.1703.04555 · pith_short_12: NMEA2TYQY27S · pith_short_16: NMEA2TYQY27SNHNO · pith_short_8: NMEA2TYQ

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/NMEA2TYQY27SNHNOTUEINTPIBG \
  | 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: 6b080d4f10c6bf269dae9d0886cde809a8d570fa4f24e144e03613c2b9263a8d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9665630e84df0379b548e8d483257ce7ebedfeb6dcdae06a9c6da3e252193a01",
    "cross_cats_sorted": [
      "math.OA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2017-03-13T21:30:44Z",
    "title_canon_sha256": "898dc7ea5df241d573953280eba0539ca972722702725e9af75caa80e513f344"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.04555",
    "kind": "arxiv",
    "version": 2
  }
}