Pith Number

pith:C74O67FT

pith:2008:C74O67FT4JRWQ33KBD7F5JZ2LC

not attested not anchored not stored refs pending

Approximating optimization problems over convex functions

N\'estor E. Aguilera, Pedro Morin

arxiv:0804.1693 v1 · 2008-04-10 · math.NA · cs.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{C74O67FT4JRWQ33KBD7F5JZ2LC}

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	2026-06-03T22:06:05.509244Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

17f8ef7cb3e263686f6a08fe5ea73a58b06d1eca2fa4855460a8192aeed1f713

Aliases

arxiv: 0804.1693 · arxiv_version: 0804.1693v1 · doi: 10.48550/arxiv.0804.1693 · pith_short_12: C74O67FT4JRW · pith_short_16: C74O67FT4JRWQ33K · pith_short_8: C74O67FT

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/C74O67FT4JRWQ33KBD7F5JZ2LC \
  | 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: 17f8ef7cb3e263686f6a08fe5ea73a58b06d1eca2fa4855460a8192aeed1f713

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5664091347742821a304719fc97e859ece81d1e73a8f08da9d3cadc39a6e59bc",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2008-04-10T12:58:35Z",
    "title_canon_sha256": "665fdea377245cb029bd7b94e148f29753d2a16bf8bce4421ecd90d7a7264a27"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0804.1693",
    "kind": "arxiv",
    "version": 1
  }
}