Pith Number

pith:7PB2SBVS

pith:2019:7PB2SBVSLDVIGGBE5REASPYLQ6

not attested not anchored not stored refs pending

Identities in Brandt semigroups, revisited

Mikhail V. Volkov

arxiv:1906.08175 v1 · 2019-06-19 · 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{7PB2SBVSLDVIGGBE5REASPYLQ6}

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	2026-05-17T23:42:54.410878Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fbc3a906b258ea831824ec48093f0b878597c9c804d0aea0b048c623f0b2c0f7

Aliases

arxiv: 1906.08175 · arxiv_version: 1906.08175v1 · doi: 10.48550/arxiv.1906.08175 · pith_short_12: 7PB2SBVSLDVI · pith_short_16: 7PB2SBVSLDVIGGBE · pith_short_8: 7PB2SBVS

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/7PB2SBVSLDVIGGBE5REASPYLQ6 \
  | 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: fbc3a906b258ea831824ec48093f0b878597c9c804d0aea0b048c623f0b2c0f7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "257fec2f2ba924b10ac07370cf4582ecd2ac50552637307d0b5e701c398f87f6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2019-06-19T15:47:58Z",
    "title_canon_sha256": "8bac6def06f760257ee7154833550373351cd6866a7b1ab38f24d53c4511cb7d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.08175",
    "kind": "arxiv",
    "version": 1
  }
}