Pith Number

pith:4QQSNSLM

pith:2018:4QQSNSLMEBXSJ3753FDRYQOYZ5

not attested not anchored not stored refs pending

Constrained optimization as ecological dynamics with applications to random quadratic programming in high dimensions

Ching-Hao Wang, Pankaj Mehta, Robert Marsland III, Wenping Cui

arxiv:1809.04221 v1 · 2018-09-12 · cond-mat.stat-mech · cond-mat.dis-nn · math.OC · q-bio.PE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4QQSNSLMEBXSJ3753FDRYQOYZ5}

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	2026-05-17T23:45:36.694377Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e42126c96c206f24effdd9471c41d8cf6df09e09e9115012e6abc3dd27210e74

Aliases

arxiv: 1809.04221 · arxiv_version: 1809.04221v1 · doi: 10.48550/arxiv.1809.04221 · pith_short_12: 4QQSNSLMEBXS · pith_short_16: 4QQSNSLMEBXSJ375 · pith_short_8: 4QQSNSLM

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/4QQSNSLMEBXSJ3753FDRYQOYZ5 \
  | 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: e42126c96c206f24effdd9471c41d8cf6df09e09e9115012e6abc3dd27210e74

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ce010f702a2b2bcf50e582d79f4f54d894789ca64ef4a6221ec45c002177a6b8",
    "cross_cats_sorted": [
      "cond-mat.dis-nn",
      "math.OC",
      "q-bio.PE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.stat-mech",
    "submitted_at": "2018-09-12T01:53:21Z",
    "title_canon_sha256": "52011126084ffa4fa8cbdec5aeb22cef859c8648450c5cb88bcef02fba983bbf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.04221",
    "kind": "arxiv",
    "version": 1
  }
}