Pith Number

pith:BZM2RYLW

pith:2021:BZM2RYLWHKAJVDTV47DRDDNFW2

not attested not anchored not stored refs pending

Steiner Triple Systems of Order 21 with Subsystems

Daniel Heinlein, Patric R. J. \"Osterg{\aa}rd

arxiv:2104.06825 v2 · 2021-04-14 · math.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BZM2RYLWHKAJVDTV47DRDDNFW2}

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.

Cited by

1 paper in Pith

On the number of small Steiner triple systems with Veblen points

Receipt and verification

First computed	2026-07-05T04:51:04.608492Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0e59a8e1763a809a8e75e7c7118da5b6aa034c6eed267783757cceee3d279c1e

Aliases

arxiv: 2104.06825 · arxiv_version: 2104.06825v2 · doi: 10.48550/arxiv.2104.06825 · pith_short_12: BZM2RYLWHKAJ · pith_short_16: BZM2RYLWHKAJVDTV · pith_short_8: BZM2RYLW

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/BZM2RYLWHKAJVDTV47DRDDNFW2 \
  | 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: 0e59a8e1763a809a8e75e7c7118da5b6aa034c6eed267783757cceee3d279c1e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4a6550e090743b2cc01721d6d33217effc723d7ecb3779a16f4cc67d1831346e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2021-04-14T12:55:41Z",
    "title_canon_sha256": "24799a10dcdbe2283a25ba1b1dbd2d1de7444fcac66b3fa51c9d65c7c8c51289"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.06825",
    "kind": "arxiv",
    "version": 2
  }
}