Pith Number

pith:SNGAWD5C

pith:2015:SNGAWD5CQCCUMJTRGJQMUZSPYA

not attested not anchored not stored refs pending

On Solving L-SR1 Trust-Region Subproblems

Jennifer B. Erway, Johannes Brust, Roummel F. Marcia

arxiv:1506.07222 v3 · 2015-06-24 · 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{SNGAWD5CQCCUMJTRGJQMUZSPYA}

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	2026-05-18T01:09:11.939763Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

934c0b0fa280854626713260ca664fc03547d158be70686d2c050d3e8bae6698

Aliases

arxiv: 1506.07222 · arxiv_version: 1506.07222v3 · doi: 10.48550/arxiv.1506.07222 · pith_short_12: SNGAWD5CQCCU · pith_short_16: SNGAWD5CQCCUMJTR · pith_short_8: SNGAWD5C

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/SNGAWD5CQCCUMJTRGJQMUZSPYA \
  | 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: 934c0b0fa280854626713260ca664fc03547d158be70686d2c050d3e8bae6698

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bc8d6e316f452ca441389614917e151987272cb208a5c987293b9a6d7becf406",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2015-06-24T02:09:19Z",
    "title_canon_sha256": "ce19f7398de09d1f4e93ff3357c768a650cd2c6ca4729b41a5f3abff2454b877"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.07222",
    "kind": "arxiv",
    "version": 3
  }
}