Navigation

  1. Physics (Technical) 2K
    1. Classical Mechanics 192
    2. Quantum 386
    3. Relativity 63
    4. Atomic 8
    5. Solid State 54
    6. Computational 18
    7. Nuclear 50
    8. Particle 103
    9. Beyond the Standard Model 62
    10. Astronomy and Cosmology 199
    11. Electromagnetism 84
    12. Thermodynamics 17
    13. Optics 50
    14. Plasma 42
    15. Condensed Matter 102
    16. Misc Physics 136
  2. Mathematics (Technical) 3K
    1. Basic Algebra 414
    2. Calculus 2K
    3. Differential Equations 236
    4. Topology 27
    5. Analysis 200
    6. Abstract Algebra 6
    7. Linear Algebra 366
    8. Differential Geometry 17
    9. Set Theory & Logic 12
    10. Probability & Stats 173
    11. Misc Math 78
  3. Other Science 1K
    1. Biology 192
    2. Chemistry 285
    3. Engineering 641
    4. Computing 311
    5. Earth 47
  4. Interviews 40
  5. Pop Science 105
  6. Experiments 141
  7. Entertainment 89

Recent Insights

Hot Threads

Physics and Math Videos

Stop randomly wandering through Youtube. Browse our curated collection of jaw dropping Physics, Math, Biology, Chemistry YouTube videos.
Advanced VLSI Design (NPTEL):- Lecture 09: Low Power Design Techniques - Part 2

Advanced VLSI Design (NPTEL):- Lecture 09: Low Power Design Techniques - Part 2

  • 0
  • 0
Advanced VLSI Design (NPTEL):- Lecture 10: Arithmetic Implementation Strategies for VLSI - Part 1

Advanced VLSI Design (NPTEL):- Lecture 10: Arithmetic Implementation Strategies for VLSI - Part 1

  • 0
  • 0
Advanced VLSI Design (NPTEL):- Lecture 11: Arithmetic Implementation Strategies for VLSI - Part 2

Advanced VLSI Design (NPTEL):- Lecture 11: Arithmetic Implementation Strategies for VLSI - Part 2

  • 0
  • 0
Advanced VLSI Design (NPTEL):- Lecture 12: Arithmetic Implementation Strategies for VLSI - Part 3

Advanced VLSI Design (NPTEL):- Lecture 12: Arithmetic Implementation Strategies for VLSI - Part 3

  • 0
  • 0
Advanced VLSI Design (NPTEL):- Lecture 13: Arithmetic Implementation Strategies for VLSI - Part 4

Advanced VLSI Design (NPTEL):- Lecture 13: Arithmetic Implementation Strategies for VLSI - Part 4

  • 0
  • 0
Advanced VLSI Design (NPTEL):- Lecture 14: Interconnect aware design: Impact of scaling, buffer insertion and inductive peaking

Advanced VLSI Design (NPTEL):- Lecture 14: Interconnect aware design: Impact of scaling, buffer insertion and inductive peaking

  • 0
  • 0
Advanced VLSI Design (NPTEL):- Lecture 15: Interconnect aware design: Low swing and Current Mod-e signaling

Advanced VLSI Design (NPTEL):- Lecture 15: Interconnect aware design: Low swing and Current Mod-e signaling

  • 0
  • 0
Advanced VLSI Design (NPTEL):- Lecture 16: Interconnect aware design: capacitively coupled interconnects

Advanced VLSI Design (NPTEL):- Lecture 16: Interconnect aware design: capacitively coupled interconnects

  • 0
  • 0
Advanced VLSI Design (NPTEL):- Lecture 17: Introduction to Hardware Description Languages

Advanced VLSI Design (NPTEL):- Lecture 17: Introduction to Hardware Description Languages

  • 0
  • 0
Advanced VLSI Design (NPTEL):- Lecture 18: Managing concurrency and time in Hardware Description Languages

Advanced VLSI Design (NPTEL):- Lecture 18: Managing concurrency and time in Hardware Description Languages

  • 0
  • 0
Advanced VLSI Design (NPTEL):- Lecture 19: Introduction to VHDL

Advanced VLSI Design (NPTEL):- Lecture 19: Introduction to VHDL

  • 0
  • 0
Advanced VLSI Design (NPTEL):- Lecture 20: Basic Components in VHDL

Advanced VLSI Design (NPTEL):- Lecture 20: Basic Components in VHDL

  • 0
  • 0
Advanced VLSI Design (NPTEL):- Lecture 21: Structural Description in VHDL

Advanced VLSI Design (NPTEL):- Lecture 21: Structural Description in VHDL

  • 0
  • 0
Advanced VLSI Design (NPTEL):- Lecture 22: Behavioral Description in VHDL

Advanced VLSI Design (NPTEL):- Lecture 22: Behavioral Description in VHDL

  • 0
  • 0
Advanced VLSI Design (NPTEL):- Lecture 23: Introduction to Verilog

Advanced VLSI Design (NPTEL):- Lecture 23: Introduction to Verilog

  • 0
  • 0
Advanced VLSI Design (NPTEL):- Lecture 24: FSM + datapath (GCD example)

Advanced VLSI Design (NPTEL):- Lecture 24: FSM + datapath (GCD example)

  • 0
  • 0
Advanced VLSI Design (NPTEL):- Lecture 25: FSM + datapath (continued)

Advanced VLSI Design (NPTEL):- Lecture 25: FSM + datapath (continued)

  • 0
  • 0
Advanced VLSI Design (NPTEL):- Lecture 26: Single Cycle MMIPS

Advanced VLSI Design (NPTEL):- Lecture 26: Single Cycle MMIPS

  • 0
  • 0
Advanced VLSI Design (NPTEL):- Lecture 27: Multicycle MMIPS

Advanced VLSI Design (NPTEL):- Lecture 27: Multicycle MMIPS

  • 0
  • 0
Advanced VLSI Design (NPTEL):- Lecture 28: Multicycle MMIPS â FSM

Advanced VLSI Design (NPTEL):- Lecture 28: Multicycle MMIPS â FSM

  • 0
  • 0
Advanced VLSI Design (NPTEL):- Lecture 29: Brief Overview of Basic VLSI design Automation Concepts

Advanced VLSI Design (NPTEL):- Lecture 29: Brief Overview of Basic VLSI design Automation Concepts

  • 0
  • 0
Advanced VLSI Design (NPTEL):- Lecture 30: Netlist and System Partitioning

Advanced VLSI Design (NPTEL):- Lecture 30: Netlist and System Partitioning

  • 0
  • 0
Advanced VLSI Design (NPTEL):- Lecture 31: Timing Analysis in the context of Physical design Automation

Advanced VLSI Design (NPTEL):- Lecture 31: Timing Analysis in the context of Physical design Automation

  • 0
  • 0
Advanced VLSI Design (NPTEL):- Lecture 32: Placement algorithm

Advanced VLSI Design (NPTEL):- Lecture 32: Placement algorithm

  • 0
  • 0
Advanced VLSI Design (NPTEL):- Lecture 33: Introduction to VLSI Testing

Advanced VLSI Design (NPTEL):- Lecture 33: Introduction to VLSI Testing

  • 0
  • 0
Advanced VLSI Design (NPTEL):- Lecture 34: VLSI Test Basics - I

Advanced VLSI Design (NPTEL):- Lecture 34: VLSI Test Basics - I

  • 0
  • 0
Advanced VLSI Design (NPTEL):- Lecture 35: VLSI Test Basics - II

Advanced VLSI Design (NPTEL):- Lecture 35: VLSI Test Basics - II

  • 0
  • 0
Advanced VLSI Design (NPTEL):- Lecture 36: VLSI Testing: Automatic Test Pattern Generation

Advanced VLSI Design (NPTEL):- Lecture 36: VLSI Testing: Automatic Test Pattern Generation

  • 0
  • 0
Advanced VLSI Design (NPTEL):- Lecture 37 VLSI Testing: design for Test (DFT)

Advanced VLSI Design (NPTEL):- Lecture 37 VLSI Testing: design for Test (DFT)

  • 0
  • 0
Advanced VLSI Design (NPTEL):- Lecture 38: VLSI Testing: Built-in Self-Test (BIST)

Advanced VLSI Design (NPTEL):- Lecture 38: VLSI Testing: Built-in Self-Test (BIST)

  • 0
  • 0
Advanced VLSI Design (NPTEL):- Lecture 39: VLSI design Verification: An Introduction

Advanced VLSI Design (NPTEL):- Lecture 39: VLSI design Verification: An Introduction

  • 0
  • 0
Advanced VLSI Design (NPTEL):- Lecture 40: VLSI design Verification: An Introduction

Advanced VLSI Design (NPTEL):- Lecture 40: VLSI design Verification: An Introduction

  • 0
  • 0
Advanced VLSI Design (NPTEL):- Lecture 41: VLSI design Verification: Equivalence/Model Checking

Advanced VLSI Design (NPTEL):- Lecture 41: VLSI design Verification: Equivalence/Model Checking

  • 0
  • 0
Advanced VLSI Design (NPTEL):- Lecture 42: VLSI design Verification: Model Checking

Advanced VLSI Design (NPTEL):- Lecture 42: VLSI design Verification: Model Checking

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Introductory video

Linear Algebra by Prof. Dilip Patil (NPTEL):- Introductory video

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 1: Introduction to Algebraic Structures - Rings and Fields

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 1: Introduction to Algebraic Structures - Rings and Fields

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 2: Defnition of Vector Spaces

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 2: Defnition of Vector Spaces

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 3: Examples of Vector Spaces

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 3: Examples of Vector Spaces

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 4: Defnition of subspaces

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 4: Defnition of subspaces

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 5: Examples of subspaces

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 5: Examples of subspaces

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 6: Examples of subspaces continued

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 6: Examples of subspaces continued

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 7: Sum of subspaces

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 7: Sum of subspaces

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 8: System of linear equations

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 8: System of linear equations

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 9: Gauss elimination

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 9: Gauss elimination

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 10: Generating system , linear independence and bases

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 10: Generating system , linear independence and bases

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 11: Examples of a basis of a vector space

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 11: Examples of a basis of a vector space

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 12: Review of univariate polynomials

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 12: Review of univariate polynomials

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 13: Examples of univariate polynomials and rational functions

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 13: Examples of univariate polynomials and rational functions

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 14: More examples of a basis of vector spaces

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 14: More examples of a basis of vector spaces

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 15: Vector spaces with finite generating system

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 15: Vector spaces with finite generating system

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 16: Steinitzs exchange theorem and examples

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 16: Steinitzs exchange theorem and examples

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 17: Examples of finite dimensional vector spaces

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 17: Examples of finite dimensional vector spaces

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 18: Dimension formula and its examples

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 18: Dimension formula and its examples

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 19: Existence of a basis

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 19: Existence of a basis

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 20: Existence of a basis continued

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 20: Existence of a basis continued

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 21: Existence of a basis continued

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 21: Existence of a basis continued

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 22: Introduction to Linear Maps

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 22: Introduction to Linear Maps

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 23: Examples of Linear Maps

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 23: Examples of Linear Maps

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 24: Linear Maps and Bases

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 24: Linear Maps and Bases

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 25: Pigeonhole principle in Linear Algebra

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 25: Pigeonhole principle in Linear Algebra

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 26: Interpolation and the rank theorem

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 26: Interpolation and the rank theorem

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 27: Examples

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 27: Examples

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 28: Direct sums of vector spaces

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 28: Direct sums of vector spaces

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 29: Projections

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 29: Projections

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 30: Direct sum decomposition of a vector space

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 30: Direct sum decomposition of a vector space

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 31: Dimension equality and examples

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 31: Dimension equality and examples

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 32: Dual spaces

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 32: Dual spaces

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 33: Dual spaces continued

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 33: Dual spaces continued

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 34: Quotient spaces

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 34: Quotient spaces

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 35: Homomorphism theorem of vector spaces

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 35: Homomorphism theorem of vector spaces

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 36: Isomorphism theorem of vector spaces

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 36: Isomorphism theorem of vector spaces

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 37: Matrix of a linear map - 1

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 37: Matrix of a linear map - 1

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 38: Matrix of a linear map - 2

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 38: Matrix of a linear map - 2

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 39: Matrix of a linear map - 3

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 39: Matrix of a linear map - 3

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 40: Change of bases

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 40: Change of bases

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 41: Computational rules for matrices

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 41: Computational rules for matrices

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 42: Rank of a matrix

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 42: Rank of a matrix

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 43: Computation of the rank of a matrix

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 43: Computation of the rank of a matrix

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 44: Elementary matrices

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 44: Elementary matrices

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 45: Elementary operations on matrices

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 45: Elementary operations on matrices

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 46: LR decomposition

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 46: LR decomposition

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 47: Elementary Divisor Theorem

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 47: Elementary Divisor Theorem

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 48: Permutation groups

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 48: Permutation groups

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 49: Canonical cycle decomposition of permutations

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 49: Canonical cycle decomposition of permutations

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 50: Signature of a permutation

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 50: Signature of a permutation

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 51: Introduction to multilinear maps

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 51: Introduction to multilinear maps

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 52: Multilinear maps continued

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 52: Multilinear maps continued

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 53: Introduction to determinants

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 53: Introduction to determinants

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 54: Determinants continued

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 54: Determinants continued

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 55: Computational rules for determinants

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 55: Computational rules for determinants

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 56: Properties of determinants and adjoint of a matrix

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 56: Properties of determinants and adjoint of a matrix

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 57: Adjoint determinant theorem

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 57: Adjoint determinant theorem

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 58: The determinant of a linear operator

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 58: The determinant of a linear operator

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 59: Determinants and Volumes

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 59: Determinants and Volumes

  • 0
  • 0
Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 60: Determinants and Volumes continued

Linear Algebra by Prof. Dilip Patil (NPTEL):- Lecture 60: Determinants and Volumes continued

  • 0
  • 0
Ex: Find the Parametric Equations of a Line Perpendicular to a Plane Through a Point

Ex: Find the Parametric Equations of a Line Perpendicular to a Plane Through a Point

  • 0
  • 0
Ex 2: Find the Parametric Equations of the Line of Intersection of Two Planes Using Vectors

Ex 2: Find the Parametric Equations of the Line of Intersection of Two Planes Using Vectors

  • 0
  • 0
Ex 1: Find the Parametric Equations of the Line of Intersection of Two Planes Using Vectors

Ex 1: Find the Parametric Equations of the Line of Intersection of Two Planes Using Vectors

  • 0
  • 0
Ex: Find the Equation of a Plane Given a Point in the Plane and a Parallel Plane

Ex: Find the Equation of a Plane Given a Point in the Plane and a Parallel Plane

  • 0
  • 0
Ex: Find the Equation of Plane Containing a Line and Orthogonal to a Given Plane

Ex: Find the Equation of Plane Containing a Line and Orthogonal to a Given Plane

  • 0
  • 0
Back
Top