Pith Number

pith:IZA7SIAD

pith:2014:IZA7SIADSJ2LPFFQM6PS2E7HEO

not attested not anchored not stored refs pending

Using Hoare's Theorem to find the signature of a subgroup of an NEC group

David Singerman

arxiv:1408.0127 v1 · 2014-08-01 · 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{IZA7SIADSJ2LPFFQM6PS2E7HEO}

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	2026-05-18T02:46:03.813952Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4641f920039274b794b0679f2d13e723b27e25b7a811cff7b977b1528cbb171b

Aliases

arxiv: 1408.0127 · arxiv_version: 1408.0127v1 · doi: 10.48550/arxiv.1408.0127 · pith_short_12: IZA7SIADSJ2L · pith_short_16: IZA7SIADSJ2LPFFQ · pith_short_8: IZA7SIAD

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/IZA7SIADSJ2LPFFQM6PS2E7HEO \
  | 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: 4641f920039274b794b0679f2d13e723b27e25b7a811cff7b977b1528cbb171b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "02289f35ad9b3eea81326aa3c2df4a6c492859bfa81ab15f4633f1185b176ed3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2014-08-01T10:53:25Z",
    "title_canon_sha256": "df905c87f42f329e262c9a724702bd8fa44bb83624b591142f2fa162a4f8a113"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1408.0127",
    "kind": "arxiv",
    "version": 1
  }
}