Pith Number

pith:OTJSEJ6A

pith:2011:OTJSEJ6AS5KLADZAE2UHME5EPC

not attested not anchored not stored refs pending

Dressians, Tropical Grassmannians, and Their Rays

David Speyer, Michael Joswig, Sven Herrmann

arxiv:1112.1278 v3 · 2011-12-06 · math.CO · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OTJSEJ6AS5KLADZAE2UHME5EPC}

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	2026-05-18T02:21:27.808817Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

74d32227c09754b00f2026a87613a478ad46983ac57bbf92edb8dd218f093246

Aliases

arxiv: 1112.1278 · arxiv_version: 1112.1278v3 · doi: 10.48550/arxiv.1112.1278 · pith_short_12: OTJSEJ6AS5KL · pith_short_16: OTJSEJ6AS5KLADZA · pith_short_8: OTJSEJ6A

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/OTJSEJ6AS5KLADZAE2UHME5EPC \
  | 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: 74d32227c09754b00f2026a87613a478ad46983ac57bbf92edb8dd218f093246

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4b2c2460e2c3341ae0dbbf1cf2cc96d019bd8ea38da28fdaedf29a894783ce42",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2011-12-06T13:58:35Z",
    "title_canon_sha256": "4d6b20fefcb7bca3670006e46ac6dea58030d7215d9a41bceeba56b6336fe650"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.1278",
    "kind": "arxiv",
    "version": 3
  }
}