Pith Number

pith:I7NP2SCM

pith:2020:I7NP2SCMFX4FX4AE6VZ26IRAI6

not attested not anchored not stored refs pending

New Methods in Coding Theory: Error-Correcting Codes and the Shannon Capacity

Sven Polak

arxiv:2005.02945 v1 · 2020-05-06 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{I7NP2SCMFX4FX4AE6VZ26IRAI6}

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.

Cited by

1 paper in Pith

Efficient Approximation of Quantum Channel Fidelity Exploiting Symmetry

Receipt and verification

First computed	2026-07-05T01:00:57.570522Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

47dafd484c2df85bf004f573af222047b6b89c91324e899e4a2b118e440789a5

Aliases

arxiv: 2005.02945 · arxiv_version: 2005.02945v1 · doi: 10.48550/arxiv.2005.02945 · pith_short_12: I7NP2SCMFX4F · pith_short_16: I7NP2SCMFX4FX4AE · pith_short_8: I7NP2SCM

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/I7NP2SCMFX4FX4AE6VZ26IRAI6 \
  | 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: 47dafd484c2df85bf004f573af222047b6b89c91324e899e4a2b118e440789a5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0fa1342e6e7611901d86cdb1561bc714cc325a1474f38ee46104b87200a4b862",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2020-05-06T16:27:14Z",
    "title_canon_sha256": "cc4d83b0095fb315c7adbe06a7f087cffe92f7c24a5abf74691e3e26d1a8a6a6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2005.02945",
    "kind": "arxiv",
    "version": 1
  }
}