Pith Number

pith:TFEPR5FQ

pith:2019:TFEPR5FQHYUUTX6OTGACXCVSSZ

not attested not anchored not stored refs pending

Construction of the Barrier for Reach-Avoid Differential Games in Three-Dimensional Space with Four Equal-Speed Players

Rui Yan, Yisheng Zhong, Zongying Shi

arxiv:1904.02810 v1 · 2019-04-04 · 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{TFEPR5FQHYUUTX6OTGACXCVSSZ}

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	2026-05-17T23:49:19.579270Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9948f8f4b03e2949dfce99802b8ab29663844b673b9324a0a26bc18472078df7

Aliases

arxiv: 1904.02810 · arxiv_version: 1904.02810v1 · doi: 10.48550/arxiv.1904.02810 · pith_short_12: TFEPR5FQHYUU · pith_short_16: TFEPR5FQHYUUTX6O · pith_short_8: TFEPR5FQ

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/TFEPR5FQHYUUTX6OTGACXCVSSZ \
  | 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: 9948f8f4b03e2949dfce99802b8ab29663844b673b9324a0a26bc18472078df7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "239d2d1ea63d08b0ce0872abb5b803a4549b98946db1d52fb07bae4e2f6cf9fe",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2019-04-04T22:26:56Z",
    "title_canon_sha256": "6801ecd23b4426b9dbb85947af22ed8a3a9a74045c7cd3573bce3d376f3eea7e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.02810",
    "kind": "arxiv",
    "version": 1
  }
}