Pith Number

pith:HQTKTDW4

pith:2016:HQTKTDW4XFGNGGOXRFZO4WJEOK

not attested not anchored not stored refs pending

Configuration Equivalence is not Equivalent to Isomorphism

Ali Rejali, Meisam Soleimani Malekan

arxiv:1605.00781 v2 · 2016-05-03 · 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{HQTKTDW4XFGNGGOXRFZO4WJEOK}

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	2026-05-18T00:43:35.833932Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3c26a98edcb94cd319d78972ee5924728d90c8e949fa0d093ee22988bf08375a

Aliases

arxiv: 1605.00781 · arxiv_version: 1605.00781v2 · doi: 10.48550/arxiv.1605.00781 · pith_short_12: HQTKTDW4XFGN · pith_short_16: HQTKTDW4XFGNGGOX · pith_short_8: HQTKTDW4

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/HQTKTDW4XFGNGGOXRFZO4WJEOK \
  | 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: 3c26a98edcb94cd319d78972ee5924728d90c8e949fa0d093ee22988bf08375a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7d5f0adeb0d6a6ff922162bfbeaa39e68ae5ac29735d34d7d29b954599087b20",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2016-05-03T08:24:34Z",
    "title_canon_sha256": "ad9f2c69cd29829e86ef06d5fd4fe5b8b3c8c14e75d532c4634d5a26759aae15"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.00781",
    "kind": "arxiv",
    "version": 2
  }
}