Pith Number

pith:D3TAEHGU

pith:2016:D3TAEHGUN3YOH5XS77HQBDZ67H

not attested not anchored not stored refs pending

Solving rank-constrained semidefinite programs in exact arithmetic

Simone Naldi

arxiv:1602.00431 v3 · 2016-02-01 · cs.SY · cs.SC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{D3TAEHGUN3YOH5XS77HQBDZ67H}

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	2026-05-18T00:57:38.046597Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1ee6021cd46ef0e3f6f2ffcf008f3ef9fe8159b906d8f3e24f771ac667afded3

Aliases

arxiv: 1602.00431 · arxiv_version: 1602.00431v3 · doi: 10.48550/arxiv.1602.00431 · pith_short_12: D3TAEHGUN3YO · pith_short_16: D3TAEHGUN3YOH5XS · pith_short_8: D3TAEHGU

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/D3TAEHGUN3YOH5XS77HQBDZ67H \
  | 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: 1ee6021cd46ef0e3f6f2ffcf008f3ef9fe8159b906d8f3e24f771ac667afded3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c73106e335f5673ee744a87b1f41f9e63cf79f7fd0497faafdc953f662099ffb",
    "cross_cats_sorted": [
      "cs.SC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SY",
    "submitted_at": "2016-02-01T08:58:49Z",
    "title_canon_sha256": "139fc10b19914d37c8868fc3e55e1de0d1ea6ac5207f6a449f03583b509c9bb6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1602.00431",
    "kind": "arxiv",
    "version": 3
  }
}