Pith Number

pith:RUBAE4GN

pith:2017:RUBAE4GN77G7M27R3CF2XUPE2R

not attested not anchored not stored refs pending

Purely Combinatorial Algorithms for Approximate Directed Minimum Degree Spanning Trees

Ran Duan, Tianyi Zhang

arxiv:1707.05123 v3 · 2017-07-17 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RUBAE4GN77G7M27R3CF2XUPE2R}

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	2026-05-17T23:45:04.898412Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8d020270cdffcdf66bf1d88babd1e4d4793837a3717203565405e9bcd0ebf6bc

Aliases

arxiv: 1707.05123 · arxiv_version: 1707.05123v3 · doi: 10.48550/arxiv.1707.05123 · pith_short_12: RUBAE4GN77G7 · pith_short_16: RUBAE4GN77G7M27R · pith_short_8: RUBAE4GN

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/RUBAE4GN77G7M27R3CF2XUPE2R \
  | 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: 8d020270cdffcdf66bf1d88babd1e4d4793837a3717203565405e9bcd0ebf6bc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aeb08e118c269d54754a738784365af2b80d05d0f8c1ced5da3ce722809ddb2c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2017-07-17T12:47:39Z",
    "title_canon_sha256": "8c5459c7098f33e3d20859c368887a604c5fdadc400286d95640adaf3417560c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.05123",
    "kind": "arxiv",
    "version": 3
  }
}