Pith Number

pith:GXIQP6WT

pith:2015:GXIQP6WTFCME4XUCQ66CKSIG2Z

not attested not anchored not stored refs pending

Fra\"iss\'e Structures with Universal Automorphism Groups

Isabel M\"uller

arxiv:1501.04613 v1 · 2015-01-19 · math.LO · math.GR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GXIQP6WTFCME4XUCQ66CKSIG2Z}

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	2026-05-18T02:29:08.644366Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

35d107fad328984e5e8287bc254906d66a7a025caa0deed706ca078909ff72b1

Aliases

arxiv: 1501.04613 · arxiv_version: 1501.04613v1 · doi: 10.48550/arxiv.1501.04613 · pith_short_12: GXIQP6WTFCME · pith_short_16: GXIQP6WTFCME4XUC · pith_short_8: GXIQP6WT

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/GXIQP6WTFCME4XUCQ66CKSIG2Z \
  | 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: 35d107fad328984e5e8287bc254906d66a7a025caa0deed706ca078909ff72b1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d26a151526c17003c539dda27450bf3e61b29cedac5826a8f31a151a18577489",
    "cross_cats_sorted": [
      "math.GR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2015-01-19T20:24:17Z",
    "title_canon_sha256": "36cbd0398f12c21b3fce1c672f5a106d186d7a2236a1646805827359745a2af2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.04613",
    "kind": "arxiv",
    "version": 1
  }
}