Pith Number

pith:R75SS6PT

pith:2019:R75SS6PTJ6EPLQMSNRIPD4XETL

not attested not anchored not stored refs pending

Minimal tropical basis for Bergman fan of matroid

Yasuhito Nakajima

arxiv:1901.06893 v2 · 2019-01-21 · 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{R75SS6PTJ6EPLQMSNRIPD4XETL}

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	2026-05-17T23:53:02.504601Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8ffb2979f34f88f5c1926c50f1f2e49ad66080a836bdb7574da1f54c6fa47501

Aliases

arxiv: 1901.06893 · arxiv_version: 1901.06893v2 · doi: 10.48550/arxiv.1901.06893 · pith_short_12: R75SS6PTJ6EP · pith_short_16: R75SS6PTJ6EPLQMS · pith_short_8: R75SS6PT

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/R75SS6PTJ6EPLQMSNRIPD4XETL \
  | 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: 8ffb2979f34f88f5c1926c50f1f2e49ad66080a836bdb7574da1f54c6fa47501

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b0414a166551b92c24b3db5f00063910e5fb2398ca092057cb33a097016370b0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2019-01-21T11:55:50Z",
    "title_canon_sha256": "fe4591350f2e5dcb1f8b808c1d1ea2e0ac30f8a4403dca9ec7b303563972a0d7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.06893",
    "kind": "arxiv",
    "version": 2
  }
}