Pith Number

pith:MJHMNDB2

pith:2014:MJHMNDB2M76VJEXUVQ4UYIVX3U

not attested not anchored not stored refs pending

How many circuits determine an oriented matroid?

Jorge Luis Ram\'irez Alfons\'in, Kolja Knauer, Luis Pedro Montejano

arxiv:1407.7388 v5 · 2014-07-28 · 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{MJHMNDB2M76VJEXUVQ4UYIVX3U}

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	2026-05-18T01:11:03.592698Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

624ec68c3a67fd5492f4ac394c22b7dd2730ebd80320fa1708bcb32f889aa5b2

Aliases

arxiv: 1407.7388 · arxiv_version: 1407.7388v5 · doi: 10.48550/arxiv.1407.7388 · pith_short_12: MJHMNDB2M76V · pith_short_16: MJHMNDB2M76VJEXU · pith_short_8: MJHMNDB2

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/MJHMNDB2M76VJEXUVQ4UYIVX3U \
  | 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: 624ec68c3a67fd5492f4ac394c22b7dd2730ebd80320fa1708bcb32f889aa5b2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "07a5419d7693eefdf72e275b07874058c3ec5b29b9c8179f415e59b315cd4f68",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2014-07-28T11:40:45Z",
    "title_canon_sha256": "6ecb5970f03094f278b7af704ce5e6236d436f31f70c71ca34d1403cbbb04ec4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.7388",
    "kind": "arxiv",
    "version": 5
  }
}