Pith Number

pith:VQRS7MQI

pith:2019:VQRS7MQIDGKT5RIXHTYOZQWLEF

not attested not anchored not stored refs pending

An Infeasible-Start Framework for Convex Quadratic Optimization, with Application to Constraint-Reduced Interior-Point Methods

Andr\'e L. Tits, M. Paul Laiu

arxiv:1912.04335 v1 · 2019-12-09 · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VQRS7MQIDGKT5RIXHTYOZQWLEF}

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	2026-07-05T00:24:57.286504Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ac232fb20819953ec5173cf0ecc2cb2174dc772609bb5a7bb791bf36c7e8e5d8

Aliases

arxiv: 1912.04335 · arxiv_version: 1912.04335v1 · doi: 10.48550/arxiv.1912.04335 · pith_short_12: VQRS7MQIDGKT · pith_short_16: VQRS7MQIDGKT5RIX · pith_short_8: VQRS7MQI

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/VQRS7MQIDGKT5RIXHTYOZQWLEF \
  | 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: ac232fb20819953ec5173cf0ecc2cb2174dc772609bb5a7bb791bf36c7e8e5d8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f53fb7b2919487dda9d011ffe6e3e66fd8d8b1a9ecbe7cab2db57343f4aefbef",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2019-12-09T19:27:45Z",
    "title_canon_sha256": "6ec8a11f98460e14952ec441f4c4030ca8815a924d6a27b976f507c5f8249e13"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1912.04335",
    "kind": "arxiv",
    "version": 1
  }
}