Pith Number

pith:5T3REIEZ

pith:2018:5T3REIEZG3C77FW6QS67RNLA6R

not attested not anchored not stored refs pending

A group-theoretical interpretation of the word problem for free idempotent generated semigroups

Igor Dolinka, Victoria Gould, Yang Dandan

arxiv:1802.02420 v2 · 2018-02-07 · 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{5T3REIEZG3C77FW6QS67RNLA6R}

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	2026-05-17T23:56:38.796354Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ecf712209936c5ff96de84bdf8b560f45c217f30abd025678409fca6fb2cc6b6

Aliases

arxiv: 1802.02420 · arxiv_version: 1802.02420v2 · doi: 10.48550/arxiv.1802.02420 · pith_short_12: 5T3REIEZG3C7 · pith_short_16: 5T3REIEZG3C77FW6 · pith_short_8: 5T3REIEZ

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/5T3REIEZG3C77FW6QS67RNLA6R \
  | 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: ecf712209936c5ff96de84bdf8b560f45c217f30abd025678409fca6fb2cc6b6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0abee93382148922acb65a8590ec4e45cb332bc6090b18cfb33048c492709f01",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2018-02-07T13:49:40Z",
    "title_canon_sha256": "e4b0043259127bf1312a3fe7a715390e694d55605764d7c851932b36613d7c43"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.02420",
    "kind": "arxiv",
    "version": 2
  }
}