Pith Number

pith:S2YABDZQ

pith:2016:S2YABDZQZT4P44POIQGT7CUV3I

not attested not anchored not stored refs pending

A Switching for all Strongly Regular Collinearity Graphs From Polar Spaces

Ferdinand Ihringer

arxiv:1606.05898 v3 · 2016-06-19 · 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{S2YABDZQZT4P44POIQGT7CUV3I}

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	2026-05-18T00:39:13.451031Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

96b0008f30ccf8fe71ee440d3f8a95da1cc03cb36b731bfe6720821cc21f18d3

Aliases

arxiv: 1606.05898 · arxiv_version: 1606.05898v3 · doi: 10.48550/arxiv.1606.05898 · pith_short_12: S2YABDZQZT4P · pith_short_16: S2YABDZQZT4P44PO · pith_short_8: S2YABDZQ

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/S2YABDZQZT4P44POIQGT7CUV3I \
  | 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: 96b0008f30ccf8fe71ee440d3f8a95da1cc03cb36b731bfe6720821cc21f18d3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3640e758e6fe7d18cb637198df474d6e8200e57f9094f57899d35a0c6b4bc453",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2016-06-19T18:40:19Z",
    "title_canon_sha256": "d301c338586b14da0ac00163ad8eb7570488378061d0ba9a087f0c7fd417a7a5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1606.05898",
    "kind": "arxiv",
    "version": 3
  }
}