Pith Number

pith:WTIQ5UKT

pith:2013:WTIQ5UKTOAOSD5CQS4EBKUXQ4P

not attested not anchored not stored refs pending

The conjugacy problem in extensions of Thompson's group F

Enric Ventura, Francesco Matucci, Jos\'e Burillo

arxiv:1307.6750 v2 · 2013-07-25 · 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{WTIQ5UKTOAOSD5CQS4EBKUXQ4P}

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	2026-05-18T03:13:57.768165Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b4d10ed153701d21f45097081552f0e3f6df99971c7b99fe4c771361ba9bff25

Aliases

arxiv: 1307.6750 · arxiv_version: 1307.6750v2 · doi: 10.48550/arxiv.1307.6750 · pith_short_12: WTIQ5UKTOAOS · pith_short_16: WTIQ5UKTOAOSD5CQ · pith_short_8: WTIQ5UKT

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/WTIQ5UKTOAOSD5CQS4EBKUXQ4P \
  | 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: b4d10ed153701d21f45097081552f0e3f6df99971c7b99fe4c771361ba9bff25

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "009ea428d9ebf4f4afd8a1f7748b526a8f98fb08ae90ce7bfd421984d4e0d353",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2013-07-25T14:12:16Z",
    "title_canon_sha256": "99f6ff48cb60a9ca1423c8e3ba25291225416f0962ac406f1734ec2f82e7a284"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.6750",
    "kind": "arxiv",
    "version": 2
  }
}