Pith Number

pith:X4SV7BGE

pith:2014:X4SV7BGE6UAYTSYCIU4D23NVR4

not attested not anchored not stored refs pending

On the connection between the conjugate gradient method and quasi-Newton methods on quadratic problems

Anders Forsgren, Tove Odland

arxiv:1407.1268 v1 · 2014-07-04 · 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{X4SV7BGE6UAYTSYCIU4D23NVR4}

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	2026-05-18T02:48:18.225850Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bf255f84c4f50189cb0245383d6db58f04cb1dd7883f075a2c6395eb104f06ea

Aliases

arxiv: 1407.1268 · arxiv_version: 1407.1268v1 · doi: 10.48550/arxiv.1407.1268 · pith_short_12: X4SV7BGE6UAY · pith_short_16: X4SV7BGE6UAYTSYC · pith_short_8: X4SV7BGE

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/X4SV7BGE6UAYTSYCIU4D23NVR4 \
  | 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: bf255f84c4f50189cb0245383d6db58f04cb1dd7883f075a2c6395eb104f06ea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d7036cc8dca7d4647929dac478c16e18bd6c22d935cc49beffbb7f7fd04b2cf4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2014-07-04T16:08:21Z",
    "title_canon_sha256": "87150d369b31bf6e03874815083143391a89cc33c80977434e78ea89f855f69f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.1268",
    "kind": "arxiv",
    "version": 1
  }
}