Pith Number

pith:6DLHGPZW

pith:2012:6DLHGPZWBU46N5GGKU3GE2QNVN

not attested not anchored not stored refs pending

The linear isometry group of the Gurarij space is universal

Ita\"i Ben Yaacov (ICJ)

arxiv:1203.4915 v4 · 2012-03-22 · math.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6DLHGPZWBU46N5GGKU3GE2QNVN}

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	2026-05-18T03:48:58.851240Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f0d6733f360d39e6f4c65536626a0dab7bc431dfb7e37ef53f7f5e64efc2e668

Aliases

arxiv: 1203.4915 · arxiv_version: 1203.4915v4 · doi: 10.48550/arxiv.1203.4915 · pith_short_12: 6DLHGPZWBU46 · pith_short_16: 6DLHGPZWBU46N5GG · pith_short_8: 6DLHGPZW

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/6DLHGPZWBU46N5GGKU3GE2QNVN \
  | 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: f0d6733f360d39e6f4c65536626a0dab7bc431dfb7e37ef53f7f5e64efc2e668

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8e0a2a4353b70d97516abb2bc88867675fec1646cde88a03d06f351cd8e9d7d1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2012-03-22T08:50:00Z",
    "title_canon_sha256": "060d1936c0890b60e06767abd3428df98b7df0bd6bf50cc7a8888a8dfe0070cc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.4915",
    "kind": "arxiv",
    "version": 4
  }
}