Pith Number

pith:DXOCQBEI

pith:2019:DXOCQBEIHAZMFQV7D6GBMWDSNY

not attested not anchored not stored refs pending

Optimization on flag manifolds

Ken Sze-Wai Wong, Ke Ye, Lek-Heng Lim

arxiv:1907.00949 v2 · 2019-07-01 · math.OC · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DXOCQBEIHAZMFQV7D6GBMWDSNY}

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	2026-07-04T23:52:06.227763Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1ddc2804883832c2c2bf1f8c1658726e118d35a19d51fd590788150a1c043312

Aliases

arxiv: 1907.00949 · arxiv_version: 1907.00949v2 · doi: 10.48550/arxiv.1907.00949 · pith_short_12: DXOCQBEIHAZM · pith_short_16: DXOCQBEIHAZMFQV7 · pith_short_8: DXOCQBEI

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/DXOCQBEIHAZMFQV7D6GBMWDSNY \
  | 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: 1ddc2804883832c2c2bf1f8c1658726e118d35a19d51fd590788150a1c043312

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "48af72b327070294831555c1ad5de1f04bc9f0dafdc157eb8c2c5638f605b993",
    "cross_cats_sorted": [
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2019-07-01T17:37:55Z",
    "title_canon_sha256": "1b1fa651ab3cb4a44c0647f407b6ec27473a95f02923ff059e1ddecc98fd99f1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.00949",
    "kind": "arxiv",
    "version": 2
  }
}