Pith Number

pith:6RX3UCZV

pith:2012:6RX3UCZVLBLU23KP7T52G2LVY3

not attested not anchored not stored refs pending

A New Continuous-Time Equality-Constrained Optimization Method to Avoid Singularity

Kai-Yuan Cai, Quan Quan

arxiv:1209.5218 v2 · 2012-09-24 · cs.NE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6RX3UCZVLBLU23KP7T52G2LVY3}

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	2026-07-05T00:46:28.223617Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f46fba0b3558574d6d4ffcfba36975c6e6d74a0d58f277459a4339f597d6829c

Aliases

arxiv: 1209.5218 · arxiv_version: 1209.5218v2 · doi: 10.48550/arxiv.1209.5218 · pith_short_12: 6RX3UCZVLBLU · pith_short_16: 6RX3UCZVLBLU23KP · pith_short_8: 6RX3UCZV

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/6RX3UCZVLBLU23KP7T52G2LVY3 \
  | 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: f46fba0b3558574d6d4ffcfba36975c6e6d74a0d58f277459a4339f597d6829c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "722716329f46eebd9ba18067e71c21bf48b2bda56d084def6105c1ae41e01e15",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NE",
    "submitted_at": "2012-09-24T10:26:19Z",
    "title_canon_sha256": "f832f539018f247cdb23a2e14a557054d37afe57c37b94fa227d348f76f7a17b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.5218",
    "kind": "arxiv",
    "version": 2
  }
}