Pith Number

pith:NKVFYXRG

pith:2018:NKVFYXRGDXXGHQMRPFMJFQEQDU

not attested not anchored not stored refs pending

Games for eigenvalues of the Hessian and concave/convex envelopes

Julio D. Rossi, Pablo Blanc

arxiv:1801.03383 v1 · 2018-01-10 · math.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NKVFYXRGDXXGHQMRPFMJFQEQDU}

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	2026-05-18T00:26:17.224442Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6aaa5c5e261dee63c191795892c0901d05fbaa8d38db60db396e1543d07ea496

Aliases

arxiv: 1801.03383 · arxiv_version: 1801.03383v1 · doi: 10.48550/arxiv.1801.03383 · pith_short_12: NKVFYXRGDXXG · pith_short_16: NKVFYXRGDXXGHQMR · pith_short_8: NKVFYXRG

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/NKVFYXRGDXXGHQMRPFMJFQEQDU \
  | 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: 6aaa5c5e261dee63c191795892c0901d05fbaa8d38db60db396e1543d07ea496

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "009bbff6a4a81f333497ca65b8e24943927f710ef8150387988c454c2b8d4abb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2018-01-10T14:12:36Z",
    "title_canon_sha256": "5d15397fd8aae3c536c2ebf4789ceea45cafe75c601d701537c7d2ff01d31908"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.03383",
    "kind": "arxiv",
    "version": 1
  }
}