Pith Number

pith:QADRYKI4

pith:2025:QADRYKI4IBJ4G6WSY6DGNRSKQY

not attested not anchored not stored refs pending

Filtrations of Tope Spaces of Oriented Matroids

Chi Ho Yuen, Kris Shaw

arxiv:2501.11295 v2 · 2025-01-20 · math.CO · math.AG · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QADRYKI4IBJ4G6WSY6DGNRSKQY}

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	2026-05-18T02:45:14.587981Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80071c291c4053c37ad2c78666c64a86256278b8e20083c0480b6b32169c9edf

Aliases

arxiv: 2501.11295 · arxiv_version: 2501.11295v2 · doi: 10.48550/arxiv.2501.11295 · pith_short_12: QADRYKI4IBJ4 · pith_short_16: QADRYKI4IBJ4G6WS · pith_short_8: QADRYKI4

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/QADRYKI4IBJ4G6WSY6DGNRSKQY \
  | 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: 80071c291c4053c37ad2c78666c64a86256278b8e20083c0480b6b32169c9edf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "64e69c2d41ae84998e4294cc7f760b1c582c92656c2a446deaa1426758e4d5ec",
    "cross_cats_sorted": [
      "math.AG",
      "math.AT"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2025-01-20T06:43:49Z",
    "title_canon_sha256": "aa55d8484c4fbd41a87941c7a2c5973304ee6a559741a2e42e138a97959120fe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2501.11295",
    "kind": "arxiv",
    "version": 2
  }
}