Pith Number

pith:LZNEZHQ6

pith:2014:LZNEZHQ6GAENZW4QXTMFZVZN5W

not attested not anchored not stored refs pending

Generic Spectrahedral Shadows

Bernd Sturmfels, Rainer Sinn

arxiv:1407.5219 v3 · 2014-07-19 · math.OC · 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{LZNEZHQ6GAENZW4QXTMFZVZN5W}

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	2026-05-18T02:17:52.034690Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5e5a4c9e1e3008dcdb90bcd85cd72ded8437dba76234b1b3a6e436a0ff86617d

Aliases

arxiv: 1407.5219 · arxiv_version: 1407.5219v3 · doi: 10.48550/arxiv.1407.5219 · pith_short_12: LZNEZHQ6GAEN · pith_short_16: LZNEZHQ6GAENZW4Q · pith_short_8: LZNEZHQ6

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/LZNEZHQ6GAENZW4QXTMFZVZN5W \
  | 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: 5e5a4c9e1e3008dcdb90bcd85cd72ded8437dba76234b1b3a6e436a0ff86617d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "78782ac49d074fe08a7726839e7af0b8de9a36083ea3eca6270f4259c6695d76",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2014-07-19T20:04:48Z",
    "title_canon_sha256": "b7a16396acf7eddfba1d227a9ae8417776fce38f4c520a67a61e1be82cc584be"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.5219",
    "kind": "arxiv",
    "version": 3
  }
}