Pith Number

pith:M2HVZU5T

pith:2008:M2HVZU5T5E4S43T62YMOTRJR54

not attested not anchored not stored refs pending

Grassmannians of classical buildings

Mark Pankov

arxiv:0804.0101 v8 · 2008-04-01 · math.CO · 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{M2HVZU5T5E4S43T62YMOTRJR54}

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	2026-05-18T04:42:03.490794Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

668f5cd3b3e9392e6e7ed618e9c531ef3422a4f9cabc24cfbfbd6a410d37d448

Aliases

arxiv: 0804.0101 · arxiv_version: 0804.0101v8 · doi: 10.48550/arxiv.0804.0101 · pith_short_12: M2HVZU5T5E4S · pith_short_16: M2HVZU5T5E4S43T6 · pith_short_8: M2HVZU5T

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/M2HVZU5T5E4S43T62YMOTRJR54 \
  | 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: 668f5cd3b3e9392e6e7ed618e9c531ef3422a4f9cabc24cfbfbd6a410d37d448

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0b0ceb8e117d2a343bab62a96f25f3fdfe814610d58d476cb1704cda4120b579",
    "cross_cats_sorted": [
      "math.GR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2008-04-01T08:08:23Z",
    "title_canon_sha256": "c3e35aaa8eb225c2ec525ca22d4432ba24a1286fd048d3c1a98fc7fc0b78a617"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0804.0101",
    "kind": "arxiv",
    "version": 8
  }
}