Pith Number

pith:YVHIJSY3

pith:2013:YVHIJSY3ICPA6VRAVM3WNFGJ5A

not attested not anchored not stored refs pending

On Totally Positive Matrices and Geometric Incidences

Miriam Farber, Saurabh Ray, Shakhar Smorodinsky

arxiv:1309.4542 v1 · 2013-09-18 · 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{YVHIJSY3ICPA6VRAVM3WNFGJ5A}

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	2026-05-18T03:12:59.074456Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c54e84cb1b409e0f5620ab376694c9e8252908159023a816c77dd74442565bc9

Aliases

arxiv: 1309.4542 · arxiv_version: 1309.4542v1 · doi: 10.48550/arxiv.1309.4542 · pith_short_12: YVHIJSY3ICPA · pith_short_16: YVHIJSY3ICPA6VRA · pith_short_8: YVHIJSY3

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/YVHIJSY3ICPA6VRAVM3WNFGJ5A \
  | 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: c54e84cb1b409e0f5620ab376694c9e8252908159023a816c77dd74442565bc9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a23fdccf621026b392faaafbb2b09a6c6c5545d3041fbd2cbf3b44cea62b6527",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2013-09-18T05:40:49Z",
    "title_canon_sha256": "b8507128931615bd5818601a63c0714f15992ff0e024f8ef491465934498f4eb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.4542",
    "kind": "arxiv",
    "version": 1
  }
}